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  • Other Sources  (1,890)
  • SPACE RADIATION  (811)
  • STRUCTURAL MECHANICS  (610)
  • Cell & Developmental Biology
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  • LUNAR AND PLANETARY EXPLORATION
  • MATHEMATICS
  • 1980-1984
  • 1970-1974  (1,890)
  • 1930-1934
  • 1972  (890)
  • 1970  (1,000)
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  • 1980-1984
  • 1970-1974  (1,890)
  • 1930-1934
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  • 1
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    The solar-wind spectrometer experiment (1970)
    In:  CASI
    Details
    Publication Date: 2004-12-06
    Description: Apollo 12 solar wind spectrometer and particle energy spectra at lunar surface
    Keywords: SPACE RADIATION
    Type: NASA. MANNED SPACECRAFT CENTER APOLLO 12- PRELIM. SCI. REPT. 1 JUN. 1970; P 75-81
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  • 2
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    Transverse deflections of a 45-inch diameter, lightweight mirror blank - Experiment and theory (1970)
    In:  CASI
    Details
    Publication Date: 2005-11-27
    Description: Theoretical calculations and holographic measurements on transverse deflections of astronomical mirror blank
    Keywords: STRUCTURAL MECHANICS
    Type: NASA, WASHINGTON OPT. TELESCOPE TECHNOL. 1970; P 287-270
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  • 3
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    Space vehicle response to atmospheric disturbances (1970)
    In:  CASI
    Details
    Publication Date: 2005-11-27
    Description: Dynamic analysis to predict space vehicle response to atmospheric disturbances with reference to space shuttle
    Keywords: STRUCTURAL MECHANICS
    Type: SPACE TRANSPORTATION SYSTEM TECHNOL. SYMP., VOL. 2 JUL. 1970; P 331-348
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  • 4
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    The solar-wind composition experiment (1970)
    In:  CASI
    Details
    Publication Date: 2005-11-27
    Description: Apollo 12 solar wind experiment and He-4 data
    Keywords: SPACE RADIATION
    Type: NASA. MANNED SPACECRAFT CENTER APOLLO 12- PRELIM. SCI. REPT. 1 JUN. 1970; P 99-102
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  • 5
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    Assessment of the potential for load alleviation concepts for space shuttle vehicles (1970)
    In:  CASI
    Details
    Publication Date: 2005-11-27
    Description: Load alleviation and structural mode control potential for space shuttle vehicle
    Keywords: STRUCTURAL MECHANICS
    Type: SPACE TRANSPORTATION SYSTEM TECHNOL. SYMP., VOL. 2 JUL. 1970; P 349-363
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  • 6
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    Panel vibration and random loads (1970)
    In:  CASI
    Details
    Publication Date: 2005-11-27
    Description: Basic vibration characteristics and random response in thin panels
    Keywords: STRUCTURAL MECHANICS
    Type: SPACE TRANSPORTATION SYSTEM TECHNOL. SYMP., VOL. 2 JUL. 1970; P 43-57
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  • 7
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    Cosmic ray experiment. Part A: Composition and energy spectra of solar cosmic ray nuclei (1972)
    In:  CASI
    Details
    Publication Date: 2005-11-30
    Description: The GE experiment consisted of two types of detectors: plastics and glasses located in panel 2 and the lower half of panel 3. In panel 2, the entire exposed detector area of 14.7 by 22.6 cm was composed of 31 sheets of 0.025-cm polycarbonate plastic 9070-112. In panel 3, 39 sheets of 0.02-cm cellulose triacetate with no plasticizer made up the major volume fraction. The lower part of panel 3 contained five types of glass detectors. Particles that entered the array after it was folded were recognized, if they crossed from one sheet to another, by means of a 2-mm relative shift of alternate sheets.
    Keywords: SPACE RADIATION
    Type: NASA. Lyndon B. Johnson Space Center Apollo 16 Prelim. Sci. Rept.; 9 p
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  • 8
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    Composition of interplanetary particles at energies from 0.1 to 150 MeV/nucleon, part B (1972)
    In:  CASI
    Details
    Publication Date: 2005-11-30
    Description: During the Apollo 16 mission, a solar flare produced an enormous amount of low-energy nuclei, many orders of magnitude greater than the level inferred from studies of tracks in the window of the Apollo 12 spacecraft during a time when the sun was quiet. The differential energy spectrum of nuclei with Z less than or equal to 6 falls by seven orders of magnitude over the interval from 0.1 to 20 MeV/nucleon, then remains almost flat up to approximately 100 MeV/nucleon. The two parts correspond to contributions from the sun and from galactic cosmic rays. Any maximum in the spectrum occurs below the lowest energy studied.
    Keywords: SPACE RADIATION
    Type: NASA. Lyndon B. Johnson Space Center Apollo 16 Prelim. Sci. Rept.; 8 p
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  • 9
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    Solar cosmic ray, solar wind, solar flare, and neutron albedo measurements, part C (1972)
    In:  CASI
    Details
    Publication Date: 2005-11-30
    Description: All mineral detectors exposed on Apollo 16 had high surface track densities probably produced by a solar flare that occurred during the mission. The heavy ions followed a power law spectrum with exponent approximately 3 down to approximately 200 KeV/nucleon. The abundance of low-energy particle tracks observed in this flare may explain the high track densities observed in lunar dust grains. Pristine heavy-particle tracks in feldspar give long tracks. Shallow pits similar to those expected from extremely heavy solar wind ions were observed in about the expected number. Initial results give a low apparent value of neutron albedo relative to theory.
    Keywords: SPACE RADIATION
    Type: NASA. Lyndon B. Johnson Space Center Apollo 16 Prelim. Sci. Rept.; 14 p
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  • 10
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    Solar flares, the lunar surface, and gas rich meteorites (1972)
    In:  CASI
    Details
    Publication Date: 2005-11-30
    Description: Investigations on the Fe-group nuclei track density vs depth in lunar rocks and Surveyor 3 TV camera filter glass were critically examined considering more factors than previously. The analysis gives a firmer basis to the observation of the preferential leakage of low energy Fe nuclei from the accelerating region of the sun. The track density gradients in lunar rock 12022 and filter glass are used to determine the lunar erosion rate of 3 angstroms/yr. Track gradients are less steep than predicted from energy spectrum observed in the Surveyor glass, perhaps due to sputtering. High densities of etchable tracks were found at all depths down to 60 cm in fines from Apollo cores and also in thin sections of the Pesjanoe, Pantar, and Fayetteville gas-rich meteorites. It is felt unlikely that suprathermal heavy ions were responsible for the high track densities.
    Keywords: SPACE RADIATION
    Type: NASA, Washington Analysis of Surveyor 3 Mater. and Phot. Returned by Apollo 12; p 221-226
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  • 11
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    Very heavy solar cosmic rays: Energy spectrum and implications for lunar erosion (1972)
    In:  CASI
    Details
    Publication Date: 2005-11-30
    Description: Particle tracks were investigated in the glass plate of a neutral density (clear flint) optical filter housed in the Surveyor 3 TV camera but exposed directly to space. The track density vs depth curve was determined and descends sharply from approximately 2.6 million tracks/sq cm at a depth of 3.6 mg/sq cm to about 35/sq cm at 700 mg/sq cm. Several tracks were of V-shapes characteristic of high energy induced fission. The erosion rate on the moon due to solar wind ions was determined from the energy spectrum, and was found to be low (0 to 2 x 10 to the minus 8th power cm/yr).
    Keywords: SPACE RADIATION
    Type: NASA, Washington Analysis of Surveyor 3 Mater. and Phot. Returned by Apollo 12; p 213-216
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  • 12
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    Solar and galactic cosmic ray exposure of Surveyor 3 as determined from cosmogenic radionuclide measurements (1972)
    In:  CASI
    Details
    Publication Date: 2005-11-30
    Description: The proton-produced Na-22 content of samples of Surveyor 3 TV camera, surface sampler scoop, and other components was determined by nondestructive gamma ray spectrometry. The contributions of the nine most prominent solar flares to Na-22 production were calculated to be 18 dpm/kg. The observed activity in the Surveyor 3 samples was 62 + or - dpm/kg. This indicates a galactic proton contribution of about 44 dpm/kg, which adjusted for spallation of Al gives a value of 42 dpm/kg. This is compared to measurements of 88 dpm/kg in the Lost City meteorite which had an orbit extending to 2.35 AU, with a 4 pi bombardment as compared to the 2 pi bombardment of the samples on the lunar surface. The agreement between Na-22 production in Surveyor 3 and the Lost City meteorite offers evidence that the galactic cosmic ray flux is almost the same at 1 Au and at 2.35 AU.
    Keywords: SPACE RADIATION
    Type: NASA, Washington Analysis of Surveyor 3 Mater. and Phot. Returned by Apollo 12; p 196-200
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  • 13
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    Long duration solar active regions (1972)
    In:  CASI
    Details
    Publication Date: 2005-11-30
    Description: Nimbus 3 and 4 observations of ultraviolet active regions of the sun have been investigated. It is not clear what is producing these UV-active regions, however, it could be changes in the overall intensity of the solar continuum near the region of the temperature minimum, or the solar flux variations that have been seen could be due to a continuous type of absorption like that associated with the ionization limits of elements such as aluminum, silicon, or magnesium.
    Keywords: SPACE RADIATION
    Type: Significant Accomplishments in Sci., 1970; p 159-163
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  • 14
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    The stability of tangential discontinuities (1972)
    In:  CASI
    Details
    Publication Date: 2005-11-30
    Description: Intuition regarding the stability of MHD tangential discontinuities of solar wind has been borne out by a linear stability analysis of the MHD equations. In performing the calculation, the model used had no plasma flow and thus corresponded to the solar wind rest frame. The method calculated the change in total energy, plasma plus magnetic, due to the perturbation. This type of stability analysis is analogous to the test of the stability of an equilibrium point in a mechanical potential.
    Keywords: SPACE RADIATION
    Type: Significant Accomplishments in Sci., 1970; p 134-139
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  • 15
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    Solar wind heat flow (1972)
    In:  CASI
    Details
    Publication Date: 2005-11-30
    Description: The ability of a theoretical solar wind model to predict the energy flux density due to heat conduction was investigated. In order to demonstrate this capability, the analysis used simultaneous data from the electron plasma experiment of Ogilvie and Lind, and the vector magnetic field data of Heppner and Sugiura on OGO-5. On the strength of two independent, different, and consistent experimental determinations of the conduction of heat flux by electrons at 149.6 gigameters(1 AU), it was determined that the models for the solar wind must be able to predict a value for the heat conduction in the range 0.007 to 0.008 in order to be in agreement with the observations.
    Keywords: SPACE RADIATION
    Type: Significant Accomplishments in Sci., 1970; p 144-148
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  • 16
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    Solar X-rays and particle acceleration (1972)
    In:  CASI
    Details
    Publication Date: 2005-11-30
    Description: The process of solar flare acceleration of interplanetary particles, as measured by the fifth orbiting solar observatory, is explained. Data show the acceleration proceeds in two stages: (1) particle acceleration by induced electric fields arising from annihilating magnetic fields at the beginning stages of flares, and (2) a Fermi acceleration mechanism operating in a shock front produced by the flare.
    Keywords: SPACE RADIATION
    Type: Significant Accomplishments in Sci., 1970; p 171-175
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  • 17
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    Nonstationary envelope process and first excursion probability (1972)
    In:  CASI
    Details
    Publication Date: 2005-11-30
    Description: A definition of the envelope of nonstationary random processes is proposed. The establishment of the envelope definition makes it possible to simulate the nonstationary random envelope directly. Envelope statistics, such as the density function, joint density function, moment function, and level crossing rate, which are relevent to analyses of catastrophic failure, fatigue, and crack propagation in structures, are derived. Applications of the envelope statistics to the prediction of structural reliability under random loadings are discussed in detail.
    Keywords: MATHEMATICS
    Type: JPL Quart. Tech. Rev., Vol. 1, No. 4; p 1-12
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  • 18
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    The space radiation environment in low altitude and low inclination orbits (1970)
    In:  CASI
    Details
    Publication Date: 2005-11-27
    Description: Charged particle dose rates for men and radiation sensitive materials during long-duration flights in low orbit
    Keywords: SPACE RADIATION
    Type: OPT. TELESCOPE TECHNOL. 1970; P 495-499
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  • 19
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    Dynamic response of antenna structures in a launch environment (1970)
    In:  CASI
    Details
    Publication Date: 2005-11-27
    Description: Communications satellite antenna structure dynamic response to random loads in launch environment
    Keywords: STRUCTURAL MECHANICS
    Type: NASA. LEWIS RES. CENTER SPACE TRANSPORTATION SYSTEM TECHNOL. SYMP., VOL. 2 JUL. 1970; P 301-329
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  • 20
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    Space shuttle staging dynamics (1970)
    In:  CASI
    Details
    Publication Date: 2005-11-27
    Description: Staging dynamics for piggyback space shuttles
    Keywords: STRUCTURAL MECHANICS
    Type: NASA. LEWIS RES. CENTER SPACE TRANSPORTATION SYSTEM TECHNOL. SYMP., VOL. 2 JUL. 1970; P 123-142
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  • 21
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    Lifting and control surface flutter (1970)
    In:  CASI
    Details
    Publication Date: 2005-11-27
    Description: Lifting and control surface flutter on space shuttles
    Keywords: STRUCTURAL MECHANICS
    Type: SPACE TRANSPORTATION SYSTEM TECHNOL. SYMP., VOL. 2 JUL. 1970; P 177-198
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  • 22
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    Vibration isolation of large masses and vacuum chambers (1970)
    In:  CASI
    Details
    Publication Date: 2005-11-27
    Description: Control systems for vibration isolation of large structures and vacuum chambers
    Keywords: STRUCTURAL MECHANICS
    Type: NASA, WASHINGTON OPT. TELESCOPES TECHNOL. 1970; P 733-749
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  • 23
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    Behavior of structural joints and assemblies under thermal environment (1970)
    In:  CASI
    Details
    Publication Date: 2005-11-27
    Description: Thermal environment effects on alignment behavior of structural joints and assemblies of reentry vehicle and Mars landing module
    Keywords: STRUCTURAL MECHANICS
    Type: OPT. TELESCOPE TECHNOL. 1970; P 335-349
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  • 24
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    Vibration environment (1970)
    In:  CASI
    Details
    Publication Date: 2005-11-27
    Description: Vibration response and acoustic fatigue characteristics of space shuttle thermal protection system design concepts
    Keywords: STRUCTURAL MECHANICS
    Type: SPACE TRANSPORTATION SYSTEM TECHNOL. SYMP., VOL. 2 JUL. 1970; P 273-284
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  • 25
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    Application of dynamic models (1970)
    In:  CASI
    Details
    Publication Date: 2005-11-27
    Description: Dynamic model for obtaining response data for space shuttle
    Keywords: STRUCTURAL MECHANICS
    Type: SPACE TRANSPORTATION SYSTEM TECHNOL. SYMP., VOL. 2 JUL. 1970; P 29-42
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  • 26
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    Influence on the POGO effect of the aerodynamic phenomena in a rocket afterbody (1970)
    In:  CASI
    Details
    Publication Date: 2005-11-27
    Description: Pogo effect influence on aerodynamic phenomena in rocket afterbody
    Keywords: STRUCTURAL MECHANICS
    Type: NASA. LEWIS RES. CENTER SPACE TRANSPORTATION SYSTEM TECHNOL. SYMP., VOL. 2 JUL. 1970; P 263-265
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  • 27
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    Development of the Tsiolkovskiy equation in the works of native /Soviet/ scientists (1970)
    In:  CASI
    Details
    Publication Date: 2005-11-27
    Description: Motion equation for studies of rocket dynamics
    Keywords: MATHEMATICS
    Type: TRANS. OF THE FIRST LECTURES DEDICATED TO THE DEVELOP. OF THE SCI. HERITAGE OF K. E. TSIOLKOVSKIY APR. 1970; P 77-90
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  • 28
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    Assessment of advances in structural analysis for space shuttle (1972)
    In:  CASI
    Details
    Publication Date: 2005-11-30
    Description: The latest technology for structural analysis in relation to the design tasks that lie ahead for the space shuttle is reviewed. For shell-of-revolution structures, the analysis can be formulated as a one-dimensional problem which is readily solved by using finite-difference or numerical-integration techniques. For more general asymmetric shells, a two-dimensional formulation is required. However, the governing equations are readily formulated and are amenable to solution by finite-difference techniques. For a completely general structural arrangement, such as structural frameworks, recourse is usually made to discretized formulations using finite elements. Of course, the finite-element programs could be used for shell structures, but at a loss in accuracy and increase in computer time compared with the special purpose programs.
    Keywords: STRUCTURAL MECHANICS
    Type: NASA Space Shuttle Technol. Conf.; p 685-725
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  • 29
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    Solar particle tracks in glass from Surveyor 3 (1972)
    In:  CASI
    Details
    Publication Date: 2005-11-30
    Description: Samples of glass from the Surveyor 3 TV camera filter were examined for particle tracks by optical and scanning electron microscopy. The corrected density value is 1.7 million + or - 0.1 million tracks/sq cm, and the track density vs depth curve is determined. Comparisons with other estimated and calculated data are discussed, and lack of agreement between data sets is considered. It is felt that considerable erosion occurs, and that erosion also occurs by a flaking of small thicknesses of material, possibly caused by solar wind irradiation.
    Keywords: SPACE RADIATION
    Type: NASA, Washington Analysis of Surveyor 3 Mater. and Phot. Returned by Apollo 12; p 209-212
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  • 30
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    Enhanced emission of iron nuclei in solar flares (1972)
    In:  CASI
    Details
    Publication Date: 2005-11-30
    Description: A silica glass window from Apollo 12 CM and a piece of flint glass from the Surveyor 3 camera filter were examined for Fe nuclei tracks. A large difference between observed and predicted track densitites was found. At low rigidity (or energy), the solar particle Fe/He ratio is much higher than the photospheric abundance ratio, but decreases with increasing rigidity until it approaches the photospheric value at a rigidity of about 500 MV. It is felt that the low-energy Fe tracks are of solar origin. The implications that heavy nuclei can be preferentially emitted from a source of energetic particles are discussed. Other conclusions are the following: Rocks exposed on the lunar surface for 10 million yr would accumulate about 6 x 10 to the 12th power tracks/sq cm, and the rate of radiation-induced erosion is about 10 to the -9 cm/yr. The lunar soil should contain heavily irradiated small grains, some with track densities of about 10 to the 12th power/sq cm that have flaked from radiation-damaged rock surfaces and some that were irradiated while at the top of the soil layer.
    Keywords: SPACE RADIATION
    Type: NASA, Washington Analysis of Surveyor 3 Mater. and Phot. Returned by Apollo 12; p 217-220
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  • 31
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    Structural deformation of an orthotropic plate (1970)
    In:  CASI
    Details
    Publication Date: 2005-11-27
    Description: Ring reinforcements for damping structural deformation in orthotropic mirror design
    Keywords: STRUCTURAL MECHANICS
    Type: NASA, WASHINGTON OPT. TELESCOPE TECHNOL. 1970; P 283-286
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  • 32
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    Application of finite element techniques to the design and manufacture of astronomical mirrors (1970)
    In:  CASI
    Details
    Publication Date: 2005-11-27
    Description: Finite element method for structural design of astronomical mirrors
    Keywords: STRUCTURAL MECHANICS
    Type: NASA, WASHINGTON OPT. TELESCOPE TECHNOL. 1970; P 249-255
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  • 33
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    Transient loading considerations for shuttle design (1970)
    In:  CASI
    Details
    Publication Date: 2005-11-27
    Description: Transient loading considerations for shuttle design
    Keywords: STRUCTURAL MECHANICS
    Type: NASA. LEWIS RES. CENTER SPACE TRANSPORTATION SYSTEM TECHNOL. SYMP., VOL. 2 JUL. 1970; P 79-100
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  • 34
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    Assessment of current methods for dynamic analysis of complex structures (1970)
    In:  CASI
    Details
    Publication Date: 2005-11-27
    Description: Assessment of techniques for determining eigenvalues of large systems
    Keywords: STRUCTURAL MECHANICS
    Type: NASA. LEWIS RES. CENTER SPACE TRANSPORTATION SYSTEM TECHNOL. SYMP., VOL. 2 JUL. 1970; P 4-27
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  • 35
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    Thermal deformation prediction in orbiting observatory structures (1970)
    In:  CASI
    Details
    Publication Date: 2005-11-27
    Description: Using finite element method in analysis and design of optical space telescopes
    Keywords: STRUCTURAL MECHANICS
    Type: OPT. TELESCOPE TECHNOL. 1970; P 401-415
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  • 36
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    Self-weight loaded structures in the context of lightweight mirror applications (1970)
    In:  CASI
    Details
    Publication Date: 2005-11-27
    Description: Structural analysis for optimal load carrying substrate members of lightweight astronomical mirror
    Keywords: STRUCTURAL MECHANICS
    Type: NASA, WASHINGTON OPT. TELESCOPE TECHNOL. 1970; P 257-280
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  • 37
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    Checklist for boom selection (1970)
    In:  CASI
    Details
    Publication Date: 2005-11-27
    Description: User checklist for spacecraft boom selection with review of structural, electrical and mechanical properties
    Keywords: STRUCTURAL MECHANICS
    Type: JPL PROC. OF THE 4TH AEROSPACE MECH. SYMP. 15 JAN. 1970; P 51-54
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  • 38
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    Solar wind composition experiment (1972)
    In:  CASI
    Details
    Publication Date: 2005-11-30
    Description: The Apollo 16 SWC experiment is a continuation of the earlier experiments; however, an essential change was introduced in the solar wind particle collection technique. Platinum surfaces were incorporated in the collector foil, and use was made of a layer technique for distinguishing particles of different energies and different directions of arrival. The improvements and the expanded scope of the Apollo 16 experiment, relative to the earlier SWC experiments, can be summarized as follows: elimination of possible residual dust contamination by treating the platinum foil sections with dilute hydrofluoric acid before analysis; increased accuracy of solar wind argon abundance; determination of solar wind albedo; and search for helium in the energy range above approximately 40 KeV/nucleon.
    Keywords: SPACE RADIATION
    Type: NASA. Lyndon B. Johnson Space Center Apollo 16 Prelim. Sci. Rept.; 10 p
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  • 39
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    The flare forecasting fiasco: Is everybody looking at the same sun? (1972)
    In:  CASI
    Details
    Publication Date: 2005-11-30
    Description: The passionate dream of the oppressed solar flare forecaster is the scientific discovery of the cause, the energy source, and the observable antecedent conditions for the solar flare. This tunnel vision has had a profound and deleterious effect on the state-of-the-art. It has diverted attention from many promising approaches and relegated them to limbo. More importantly, it has actually inhibited the scientific search for the underlying physical mechanisms. Examples of neglected aspects of the problem cover the entire range from observing techniques and equipment to the availability and accuracy of the archived scientific data. A cursory inspection of this data leads to an obvious conclusion: there are at least two suns up there.
    Keywords: SPACE RADIATION
    Type: NASA, Washington Phys. of the Space Environment; p 157-171
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    Solar wind rare gas analysis: Trapped solar wind helium and neon in Surveyor 3 material (1972)
    In:  CASI
    Details
    Publication Date: 2005-11-30
    Description: The He-4 and Ne-20 contents in sections of the Surveyor 3 support strut samples were determined by optical and scanning electron microscopy and are compared to the results of the Apollo solar wind composition (SWC) experiments. The He-4/Ne-20 ratio in the samples from the sunlit side of the strut was approximately 300; the ratios determined in Apollo 12 lunar fines and SWC foil were below 100. The He-4/He-3 ratios were also determined, and the ratio obtained from Surveyor 3 material is higher than those found with Apollo 11 and 12 SWC experiments. The effects of spallation by cosmic rays or solar protons, stripping by cosmic ray or energetic solar alpha particles, recycling of solar wind He and radiogenic Ne, He from terrestrial atmosphere, mass discrimination near the moon, mass dependence of trapping probability, diffusion, and contamination by lunar dust are considered.
    Keywords: SPACE RADIATION
    Type: NASA, Washington Analysis of Surveyor 3 Mater. and Phot. Returned by Apollo 12; p 201-208
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    Quasi-seasonal variation in the sun (1972)
    In:  CASI
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    Publication Date: 2005-11-30
    Description: The results of an investigation on the effects of earth seasonal changes on solar activity, particularly sunspots, are given. These results show corpuscular and electromagnetic activity increased during the equinoctial months. In addition the electromagnetic aspect tends to increase during the winter months. It was suggested that seasonal changes in sunspot numbers may be caused by the tidal forces and the processional torques exerted by the various planets in the solar atmosphere.
    Keywords: SPACE RADIATION
    Type: Significant Accomplishments in Sci., 1970; p 164-170
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  • 42
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    Hydromagnetic heating in the solar wind (1972)
    In:  CASI
    Details
    Publication Date: 2005-11-30
    Description: Hydromagnetic heating in the solar wind was investigated using the heating model in which fast-mode hydromagnetic waves propagate outward from below the base and deposit energy by collisionless damping. Ray paths were found by solving Hamilton's equations. As the ray propagates along its path, it will damp, supplying thermal energy to the solar wind gas. The strong agreement of these results with observations is clear indication that the primary nonthermal heat source in the solar wind is the collisionless damping of hydromagnetic waves.
    Keywords: SPACE RADIATION
    Type: Significant Accomplishments in Sci., 1970; p 140-143
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    Considerations in the design of orbital telescopes for dynamic environments (1970)
    In:  CASI
    Details
    Publication Date: 2005-11-27
    Description: Acoustic, vibration, and shock environments in designing orbital telescopes
    Keywords: STRUCTURAL MECHANICS
    Type: OPT. TELESCOPE TECHNOL. 1970; P 389-400
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    Prevention of coupled structure-propulsion instability /POGO/ on the space shuttle (1970)
    In:  CASI
    Details
    Publication Date: 2005-11-27
    Description: Coupled structure-propulsion system instability /POGO/ prevention on space shuttle
    Keywords: STRUCTURAL MECHANICS
    Type: NASA. LEWIS RES. CENTER SPACE TRANSPORTATION SYSTEM TECHNOL. SYMP., VOL. 2 JUL. 1970; P 249-262
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  • 45
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    State of the art for panel flutter as applied to space shuttle heat shields (1970)
    In:  CASI
    Details
    Publication Date: 2005-11-27
    Description: Supersonic panel flutter of space shuttle heat shields with flexible supports
    Keywords: STRUCTURAL MECHANICS
    Type: SPACE TRANSPORTATION SYSTEM TECHNOL. SYMP., VOL. 2 JUL. 1970; P 199-221
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  • 46
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    A deployment fixture for the simulated zero- gravity testing of a large-area solar array (1970)
    In:  CASI
    Details
    Publication Date: 2005-11-27
    Description: Design and development of deployment fixture for simulated zero gravity testing of large area solar array
    Keywords: STRUCTURAL MECHANICS
    Type: JPL PROC. OF THE 4TH AEROSPACE MECH. SYMP. 15 JAN. 1970; P 83-89
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    State of the art materials and design for spacecraft booms (1970)
    In:  CASI
    Details
    Publication Date: 2005-11-27
    Description: Mechanical and thermal properties of materials for five spacecraft boom designs
    Keywords: STRUCTURAL MECHANICS
    Type: JPL PROC. OF THE 4TH AEROSPACE MECH. SYMP. 15 JAN. 1970; P 43-45
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    The design of aerospace mechanisms - A customer's opinion (1970)
    In:  CASI
    Details
    Publication Date: 2005-11-27
    Description: Customer opinion of design of aerospace mechanisms
    Keywords: STRUCTURAL MECHANICS
    Type: JPL PROC. OF THE 4TH AEROSPACE MECH. SYMP. 15 JAN. 1970; P 91-94
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  • 49
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    Spacecraft booms - Present and future (1970)
    In:  CASI
    Details
    Publication Date: 2005-11-27
    Description: Performance summary and spacecraft applications of booms with future trends
    Keywords: STRUCTURAL MECHANICS
    Type: JPL PROC. OF THE 4TH AEROSPACE MECH. SYMP. 15 JAN. 1970; P 55-72
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  • 50
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    Space shuttle liftoff dynamics (1970)
    In:  CASI
    Details
    Publication Date: 2004-10-30
    Description: Space shuttle liftoff dynamics
    Keywords: STRUCTURAL MECHANICS
    Type: SPACE TRANSPORTATION SYSTEM TECNOL. SYMP., VOL. 2 JUL. 1970; P 101-122
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  • 51
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    The inverse scattering problem at fixed angular momentum for nonlocal separable interactions (1972)
    In:  CASI
    Details
    Publication Date: 2006-03-12
    Description: The problem of inverse scattering at fixed angular momentum is considered. The problem is particularized to the case of nonlocal separable interactions. A brief survey of the inverse problem for nonlocal separable interactions is presented. This problem can be solved exactly by integration. It amounts to solving singular integral equations of the Hilbert-Mushkhelishvili type, which have been studied extensively in the past and appear in many areas of physics, including theory of elasticity and dispersions relations in high energy physics.
    Keywords: MATHEMATICS
    Type: NASA. Ames Res. Center Math. of Profile Inversion; 13 p
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  • 52
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    Inversion of radiation data in biophysics (1972)
    In:  CASI
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    Publication Date: 2006-03-12
    Description: Topics in biophysics are summarized in which radiation data inversion problems occur. The topics fall into two main categories. The first relates to information acquired about the distance environment through seeing, hearing, etc. The second relates to the use of electromagnetic, acoustic, or other radiation for diagnostic purposes, either at a bulk or a molecular level.
    Keywords: MATHEMATICS
    Type: NASA. Ames Res. Center Math. of Profile Inversion; 4 p
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    The inverse problem for radiation scattering (1972)
    In:  CASI
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    Publication Date: 2006-03-12
    Description: A brief survey of recent theoretical progress on the inverse scattering problem for radiation scattering from reflective boundaries and variable indices of refraction. The theory of radiation scattering is concerned primarily with the far-field relations between incident and scattered radiation in the presence of a scattering object. The primary, or direct, problem of this theory is to develop quantitative information about these scattering relations from a knowledge of the scattering object. The secondary, or inverse, problem, on the other hand, is to determine the nature of the object from an analysis of the scattering relations.
    Keywords: MATHEMATICS
    Type: NASA. Ames Res. Center Math. of Profile Inversion; 10 p
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  • 54
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    Galactic radio emissions (1970)
    In:  CASI
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    Publication Date: 2006-04-25
    Description: Thermal electron density and cosmic ray flux in galactic radio emissions
    Keywords: SPACE RADIATION
    Type: NIFICANT ACCOMPLISHMENTS IN SCI. AND TECHNOL. AT GODDARD SPACE FLIGHT CENTER 1970; P 140-144
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  • 55
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    Relativistic interplanetary electrons and positrons (1970)
    In:  CASI
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    Publication Date: 2006-04-25
    Description: Relativistic electron and positron intensity distributions in interplanetary regions
    Keywords: SPACE RADIATION
    Type: NIFICANT ACCOMPLISHMENTS IN SCI. AND TECHNOL. AT GODDARD SPACE FLIGHT CENTER 1970; P 134-139
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  • 56
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    Energetic solar X-rays (1970)
    In:  CASI
    Details
    Publication Date: 2006-04-25
    Description: Electron energy and thermal emission in solar X-ray bursts
    Keywords: SPACE RADIATION
    Type: NIFICANT ACCOMPLISHMENTS IN SCI. AND TECHNOL. AT GODDARD SPACE FLIGHT CENTER 1970; P 127-129
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  • 57
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    Cosmic X-ray line emission (1970)
    In:  CASI
    Details
    Publication Date: 2006-04-25
    Description: Statistical analysis of X ray line emission from cosmic radiation source
    Keywords: SPACE RADIATION
    Type: NIFICANT ACCOMPLISHMENTS IN SCI. AND TECHNOL. AT GODDARD SPACE FLIGHT CENTER 1970; P 178-181
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  • 58
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    Interstellar extinction (1970)
    In:  CASI
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    Publication Date: 2006-04-25
    Description: Interstellar matter in stellar extinction curve
    Keywords: SPACE RADIATION
    Type: NIFICANT ACCOMPLISHMENTS IN SCI. AND TECHNOL. AT GODDARD SPACE FLIGHT CENTER 1970; P 162-165
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  • 59
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    Remote sensing of global ozone from Nimbus 3 (1970)
    In:  CASI
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    Publication Date: 2006-04-25
    Description: Nimbus 3 infrared detectors for remote sensing of global ozone
    Keywords: SPACE RADIATION
    Type: NIFICANT ACCOMPLISHMENTS IN SCI. AND TECHNOL. AT GODDARD SPACE FLIGHT CENTER 1970; P 11-14
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  • 60
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    The solution of the relaxation problem for the Boltzmann equation by the integral iteration method (1972)
    In:  CASI
    Details
    Publication Date: 2006-04-24
    Description: The Boltzmann equation is considered in terms of the problem of relaxation of some initial distribution function which depends only on velocities, to Maxwell's distribution function. The Boltzmann equation is given for the relaxation problem in which the distribution function f(t, u, v) is time dependent and is also dependent on two other variables u and v (the velocities of rigid spherical molecules). An iteration process is discussed in which the velocity space u, v is subdivided into squares, the distribution function in each square being approximated by the second-order surface from the values of the distribution function at nine points. The set of all of these points forms a network of u, v values at the nodes of which the distribution function can be found.
    Keywords: MATHEMATICS
    Type: Numerical Methods in the Theory of Rarefied Gases; p 79-84
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    Solution of the Boltzmann kinetic equation for the relaxation of a gas mixture (1972)
    In:  CASI
    Details
    Publication Date: 2006-04-24
    Description: The temporal behavior is considered of a quiescent mixture of gases of different temperatures with spatially uniform distribution. The process of heating a cold gas by a hot gas is treated on the basis of the Boltzmann kinetic equation. The mixture is assumed to be composed of absolutely hard smooth spheres, and the initial distribution functions for each gas is taken to the Maxwellian. With such a choice of initial distribution functions, it is shown that the solution of the Boltzmann kinetic equation depends only on the velocity modulus and the time.
    Keywords: MATHEMATICS
    Type: Numerical Methods in the Theory of Rarefied Gases; p 34-42
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    Numerical methods for solving the Boltzmann equation (a review) (1972)
    In:  CASI
    Details
    Publication Date: 2006-04-24
    Description: The methods are reviewed which are utilized in principal attempts to obtain the numerical solution or modeling of the Boltzmann equation over a broad range of Knudsen numbers. The primary methods considered are the Monte Carlo and the discrete velocities methods. The conculsions drawn from the analysis include the following: (1) The Monte Carlo methods are not well suited in the area of small Knudsen numbers. (2) Among the Monte Carlo methods, the Bird method appears to be the most attractive, since it is more directly related to the Boltzmann equation. (3) The deterministic methods, which include the discrete ordinate technique, offer great possibilities but require exceedingly large computer times. (4) The use of approximating equations in combination with the discrete velocities method will possibly improve computation time and reduce the required memory volume.
    Keywords: MATHEMATICS
    Type: Numerical Methods in the Theory of Rarefied Gases; p 1-18
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  • 63
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    Pulsations of blue variable stars (1970)
    In:  CASI
    Details
    Publication Date: 2006-04-25
    Description: Evolution of pulsating variable binary star by nuclear interactions
    Keywords: SPACE RADIATION
    Type: NIFICANT ACCOMPLISHMENTS IN SCI. AND TECHNOL. AT GODDARD SPACE FLIGHT CENTER 1970; P 170-173
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  • 64
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    Low energy cosmic rays in the solar system (1970)
    In:  CASI
    Details
    Publication Date: 2006-04-25
    Description: Low energy cosmic radiation spectrum analysis for IMP 4 data on solar system
    Keywords: SPACE RADIATION
    Type: NIFICANT ACCOMPLISHMENTS IN SCI. AND TECHNOL. AT GODDARD SPACE FLIGHT CENTER 1970; P 145-149
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  • 65
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    Solar radio emissions (1970)
    In:  CASI
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    Publication Date: 2006-04-25
    Description: Solar radio bursts caused by energetic electron propagation through corona
    Keywords: SPACE RADIATION
    Type: NIFICANT ACCOMPLISHMENTS IN SCI. AND TECHNOL. AT GODDARD SPACE FLIGHT CENTER 1970; P 130-133
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  • 66
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    Observations of the ultraviolet solar flux variability (1970)
    In:  CASI
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    Publication Date: 2006-04-25
    Description: Nimbus 3 observations of ultraviolet solar flux variations
    Keywords: SPACE RADIATION
    Type: NIFICANT ACCOMPLISHMENTS IN SCI. AND TECHNOL. AT GODDARD SPACE FLIGHT CENTER 1970; P 119-122
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  • 67
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    On the resolution of the standard algorithm for cosmic ray stations (1972)
    In:  CASI
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    Publication Date: 2006-04-26
    Description: It is shown that resolution increased with increasing averaging interval. This is accompanied by an increase in the uncertainty with which the standard algorithm for cosmic ray stations is localized.
    Keywords: MATHEMATICS
    Type: Morphology of the Quiet and Disturbed Ionosphere; p 95-98
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  • 68
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    Statistical accuracy of cosmic radiation neutron component recorders (1972)
    In:  CASI
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    Publication Date: 2006-04-26
    Description: A method is examined for calculating the error of experimental data from a standard neutron monitor with the multiplicity of neutron generation. It is shown that use of the Poisson distribution to estimate the real statistical error is inadequate. The method proposed is for analysis of low-amplitude periodicities in the cosmic-ray variations.
    Keywords: SPACE RADIATION
    Type: Morphology of the Quiet and Disturbed Ionosphere; p 79-81
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  • 69
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    Molecules in interstellar space (1970)
    In:  CASI
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    Publication Date: 2006-04-25
    Description: Lifetimes of interstellar polyatomic molecules
    Keywords: SPACE RADIATION
    Type: NIFICANT ACCOMPLISHMENTS IN SCI. AND TECHNOL. AT GODDARD SPACE FLIGHT CENTER 1970; P 158-161
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  • 70
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    The NASA structural analysis general purpose digital computer program (1970)
    In:  CASI
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    Publication Date: 2006-04-25
    Description: NASA computer program for dynamic structural analysis in stress and thermal deformation problems
    Keywords: STRUCTURAL MECHANICS
    Type: NIFICANT ACCOMPLISHMENTS IN SCI. AND TECHNOL. AT GODDARD SPACE FLIGHT CENTER 1970; P 221-224
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  • 71
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    Ultra high energy cosmic rays (1970)
    In:  CASI
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    Publication Date: 2006-04-25
    Description: Extragalactic origin of ultrahigh energy cosmic rays
    Keywords: SPACE RADIATION
    Type: NIFICANT ACCOMPLISHMENTS IN SCI. AND TECHNOL. AT GODDARD SPACE FLIGHT CENTER 1970; P 153-155
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  • 72
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    Pulsars and the origin of cosmic rays (1970)
    In:  CASI
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    Publication Date: 2006-04-25
    Description: Galactic origin of pulsars and cosmic radiation sources
    Keywords: SPACE RADIATION
    Type: NIFICANT ACCOMPLISHMENTS IN SCI. AND TECHNOL. AT GODDARD SPACE FLIGHT CENTER 1970; P 150-152
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  • 73
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    Soft solar X-rays (1970)
    In:  CASI
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    Publication Date: 2006-04-25
    Description: Analysis on soft solar X-ray spectra of solar flares
    Keywords: SPACE RADIATION
    Type: NIFICANT ACCOMPLISHMENTS IN SCI. AND TECHNOL. AT GODDARD SPACE FLIGHT CENTER 1970; P 123-126
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  • 74
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    Some spatially homogeneous gas motions (1972)
    In:  CASI
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    Publication Date: 2006-04-24
    Description: A functional equation is derived for a spatially homogeneous distribution function and examples of spatially homogeneous gas motions are considered. Numerical calculation was conducted for one such motion with the use of a model equation.
    Keywords: MATHEMATICS
    Type: Numerical Methods in the Theory of Rarefied Gases; p 19-33
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    Models for the interaction of rarefied gas with a surface (1972)
    In:  CASI
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    Publication Date: 2006-04-24
    Description: Various theoretical models are discussed for the interaction of gaseous atoms with solids at energies of approximately 10 eV. The surface is modeled by a one- and three-dimensional aggregate of atoms with different initial conditions and lattice parameters. In calculating the accommodation coefficients, the direct integration of the equations of motion of gaseous molecules and atoms in the crystal lattice of the solid is used. An analysis of the advantages and the drawbacks of the models, as well as the possibilities of the analytical solutions in a one-dimensional case, is given. The dependence of the energy and the normal and the tangential momenta accommodation coefficients on the collision parameters is obtained.
    Keywords: MATHEMATICS
    Type: Numerical Methods in the Theory of Rarefied Gases; p 124-146
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    Approximation method for the kinetic Boltzmann equation (1972)
    In:  CASI
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    Publication Date: 2006-04-24
    Description: The further development of a method for approximating the Boltzmann equation is considered and a case of pseudo-Maxwellian molecules is treated in detail. A method of approximating the collision frequency is discussed along with a method for approximating the moments of the Boltzmann collision integral. Since the return collisions integral and the collision frequency are expressed through the distribution function moments, use of the proposed methods make it possible to reduce the Boltzmann equation to a series of approximating equations.
    Keywords: MATHEMATICS
    Type: Numerical Methods in the Theory of Rarefied Gases; p 85-123
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    Cosmic ray variations during PCA type absorption (1972)
    In:  CASI
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    Publication Date: 2006-04-26
    Description: It is shown based on data on the cosmic-ray neutron component, ionospheric soundings, and measurements of cosmic radio-emission absorption at Vostok station (Antarctica) that the ionization of the lower ionosphere increases during low intensity of Forbush-type cosmic rays. This is manifested in increased absorption and the appearance of strong sporadic layers in the E-region.
    Keywords: SPACE RADIATION
    Type: Morphology of the Quiet and Disturbed Ionosphere; p 74-77
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    Variations of cosmic rays associated with chromospheric flares on the sun (1972)
    In:  CASI
    Details
    Publication Date: 2006-04-26
    Description: Features of the cosmic-ray variations in the geomagnetic pole region and a smooth decrease in the cosmic rays intensity as a result of increased solar activity are reported. A 66-day variation of the cosmic rays was registered, in agreement with the maximum frequency and power of solar chromospheric flares.
    Keywords: SPACE RADIATION
    Type: Morphology of the Quiet and Disturbed Ionosphere; p 113-116
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  • 79
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    The heating of the solar wind (1970)
    In:  CASI
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    Publication Date: 2006-04-25
    Description: Heating and bulk speed of solar wind
    Keywords: SPACE RADIATION
    Type: NIFICANT ACCOMPLISHMENTS IN SCI. AND TECHNOL. AT GODDARD SPACE FLIGHT CENTER 1970; P 108-110
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  • 80
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    Perturbation of the Maxwellian distribution in chemically reacting gas mixtures (1972)
    In:  CASI
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    Publication Date: 2006-04-24
    Description: Chemically reacting gas mixtures are considered for the case in which inelastic collisions occur significantly less frequently than elastic ones. The first approximation of the general solution of the Boltzmann equation is developed and is shown to contain an additional scaler term. The concentration, the mean mass velocity, and the temperature of the mixture are determined and the rate of reaction in the first approximation is formulated. Tables are presented which give reaction rate values obtained by both the first and second approximation for different activation energies. The tables show that the first approximation is sufficient for practical purposes for calculating the reaction rate.
    Keywords: MATHEMATICS
    Type: Numerical Methods in the Theory of Rarefied Gases; p 180-188
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    A method for direct numerical integration of the Boltzmann equation (1972)
    In:  CASI
    Details
    Publication Date: 2006-04-24
    Description: The principal difficulties in numerical solution of the Boltzmann equation are considered. The study is aimed at formulating a numerical solution in such a manner that it contains a minimum amount of excess information at the distribution function level. It is pointed out that the accurate calculation of the distribution function at each point in phase space requires a tremendous number of operations, due to the necessity of solving five-fold quadratures in the collision integral. This results in the operational memory of the digital computer being insufficient to store all the data on the distribution functions at the necessary points in phase space. An algorithm is constructed involving successive iterations of the Boltzmann equation which does not require storage of each step of the new distribution function.
    Keywords: MATHEMATICS
    Type: Numerical Methods in the Theory of Rarefied Gases; p 43-63
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  • 82
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    Threshold law for electron impact ionization of atoms (1970)
    In:  CASI
    Details
    Publication Date: 2006-04-25
    Description: Threshold law for electron atom impact ionization
    Keywords: SPACE RADIATION
    Type: NIFICANT ACCOMPLISHMENTS IN SCI. AND TECHNOL. AT GODDARD SPACE FLIGHT CENTER 1970; P 114-118
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  • 83
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    Viscosity and the solar wind (1970)
    In:  CASI
    Details
    Publication Date: 2006-04-25
    Description: Viscous two fluid model for solar wind
    Keywords: SPACE RADIATION
    Type: NIFICANT ACCOMPLISHMENTS IN SCI. AND TECHNOL. AT GODDARD SPACE FLIGHT CENTER 1970; P 105-107
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  • 84
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    Results from the ATS 3 reflectometer experiment (1970)
    In:  CASI
    Details
    Publication Date: 2006-04-25
    Description: Evaluation of solar mirror surface materials by ATS 3 reflectometer
    Keywords: SPACE RADIATION
    Type: NIFICANT ACCOMPLISHMENTS IN SCI. AND TECHNOL. AT GODDARD SPACE FLIGHT CENTER 1970; P 238-240
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  • 85
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    Additional comments concerning inversion techniques (1972)
    In:  CASI
    Details
    Publication Date: 2006-03-12
    Description: The chronological development of multidimensional inversion techniques is reviewed briefly. Some current work in this area is described.
    Keywords: MATHEMATICS
    Type: NASA. Ames Res. Center Math. of Profile Inversion; 3 p
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  • 86
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    Comparative evolution of the inverse problems (Introduction to an interdisciplinary study of the inverse problems) (1972)
    In:  CASI
    Details
    Publication Date: 2006-03-12
    Description: The progressive realization of the consequences of nonuniqueness imply an evolution of both the methods and the centers of interest in inverse problems. This evolution is schematically described together with the various mathematical methods used. A comparative description is given of inverse methods in scientific research, with examples taken from mathematics, quantum and classical physics, seismology, transport theory, radiative transfer, electromagnetic scattering, electrocardiology, etc. It is hoped that this paper will pave the way for an interdisciplinary study of inverse problems.
    Keywords: MATHEMATICS
    Type: NASA. Ames Res. Center Math. of Profile Inversion; 33 p
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  • 87
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    The location of the poles of the scattering matrix (1972)
    In:  CASI
    Details
    Publication Date: 2006-03-12
    Description: A number of recent results bearing on the direct problem are described. The results deal with exterior problems and relate geometric properties of the scattering obstacles to analytic properties of the associated scattering matrix.
    Keywords: MATHEMATICS
    Type: NASA. Ames Research Center Math. of Profile Inversion; 6 p
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  • 88
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    Some methods for determining the profile functions of inhomogeneous media (1972)
    In:  CASI
    Details
    Publication Date: 2006-03-12
    Description: The problem of determining the electric permittivity of an inhomogeneous dielectric medium is considered. Two analytical methods and one numerical method for solving this problem are presented. All these methods utilize the reflection coefficient measured as a function of the angular spectrum variable. This allows measurements at a fixed frequency, and these methods, therefore, can be used when the medium being studied is dispensive. A few examples are provided and some comments are made regarding the stability of solutions obtained using the various methods.
    Keywords: MATHEMATICS
    Type: NASA. Ames Res. Center Math. of Profile Inversion; 11 p
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  • 89
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    Culling of redundant data (1972)
    In:  CASI
    Details
    Publication Date: 2006-03-12
    Description: The inversion of a large data set, with it errors, is demonstrated and the tradeoff curve, or resolving power calculations, are discussed. Consideration is given to inverse problems of the earth, represented in the idealized form of a single scaler function of a single coordinate. The difference between the functional for the real earth and the functional for some model is formulated. A procedure is given for using the linear relationships between the differences in the data and the differences in the model as side conditions. Through a process of diagonalization a model is created that fits the data. The data are culled by accepting only those relative standard errors that are less than 100 percent.
    Keywords: MATHEMATICS
    Type: NASA. Ames Res. Center Math. of Profile Inversion; 7 p
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  • 90
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    Monte Carlo inversion of seismic data (1972)
    In:  CASI
    Details
    Publication Date: 2006-03-12
    Description: The analytic solution to the linear inverse problem provides estimates of the uncertainty of the solution in terms of standard deviations of corrections to a particular solution, resolution of parameter adjustments, and information distribution among the observations. It is shown that Monte Carlo inversion, when properly executed, can provide all the same kinds of information for nonlinear problems. Proper execution requires a relatively uniform sampling of all possible models. The expense of performing Monte Carlo inversion generally requires strategies to improve the probability of finding passing models. Such strategies can lead to a very strong bias in the distribution of models examined unless great care is taken in their application.
    Keywords: MATHEMATICS
    Type: NASA. Ames Res. Center Math. of Profile Inversion; 8 p
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  • 91
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    Review of the inverse scattering problem at fixed energy in quantum mechanics (1972)
    In:  CASI
    Details
    Publication Date: 2006-03-12
    Description: Methods of solution of the inverse scattering problem at fixed energy in quantum mechanics are presented. Scattering experiments of a beam of particles at a nonrelativisitic energy by a target made up of particles are analyzed. The Schroedinger equation is used to develop the quantum mechanical description of the system and one of several functions depending on the relative distance of the particles. The inverse problem is the construction of the potentials from experimental measurements.
    Keywords: MATHEMATICS
    Type: NASA. Ames Res. Center Math. of Profile Inversion; 19 p
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  • 92
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    The Jost-Kohn inversion procedure (1972)
    In:  CASI
    Details
    Publication Date: 2006-03-12
    Description: Conditions are considered that must be imposed on a class of quantum mechanical problems to obtain reasonable results by the Jost-Kohn procedure. The discussion is restricted to problems in three space-dimensions without assuming any radial or other symmetry of the potential.
    Keywords: MATHEMATICS
    Type: NASA. Ames Res. Center Math. of Profile Inversion; 6 p
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  • 93
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    Introduction to the inverse quantum scattering problem (1972)
    In:  CASI
    Details
    Publication Date: 2006-03-12
    Description: The inverse scattering problem is introduced in the context of the Schroedinger equation. The emphasis is on the Gelfand Levitan approach to the nonrelativistic problem at fixed angular momentum.
    Keywords: MATHEMATICS
    Type: NASA. Ames Res. Center Math. of Profile Inversion; 12 p
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  • 94
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    Explicit expressions of the potential and its derivatives at the origin in terms of the scattering data (1972)
    In:  CASI
    Details
    Publication Date: 2006-03-12
    Description: The quantum mechanical theory of scattering of a particle by a spherically symmetrical potential is presented. As in the inverse scattering problem, the input of the calculation is the scattering and bound-state data, and the output is data on the potential. The results discussed are explicit expressions for the values of the potential and its derivatives at the origin in terms of the scattering and boundstate data. Various methods to obtain these results are outlined. The presentation is aimed at introducing these various approaches. The simplest scattering problem (nonrelativistic S-wave scattering on a holomorphic potential without bound states) is used as the basis for discussion, and technicalities are omitted whenever possible without loss of clarity. A complete compilation is given of the results obtained to date in this field, including the treatment of higher partial waves and the Klein-Gordon and Dirac equations.
    Keywords: MATHEMATICS
    Type: NASA. Ames Res. Center Math. of Profile Inversion; 48 p
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  • 95
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    Classical fourth- and lower order Runge-Kutta formulas with stepsize control and their application to heat transfer problems (1970)
    In:  Other Sources
    Details
    Publication Date: 2011-08-16
    Description: Classic fourth and lower order Runge-Kutta formulas with stepsize control, applying to heat transfer problems
    Keywords: MATHEMATICS
    Type: ; ADEMIE DES SCIENCES
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  • 96
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    Mn 53 and the age of galactic cosmic rays (1970)
    In:  Other Sources
    Details
    Publication Date: 2011-08-16
    Description: Mn 53 age measurement of galactic cosmic rays
    Keywords: SPACE RADIATION
    Type: ; 483 (
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  • 97
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    Strain inhomogeneities, molecular chain scission and stress-deformation in polymers (1970)
    In:  Other Sources
    Details
    Publication Date: 2011-08-16
    Description: Bond rupture and fracture in semicrystalline polymers, noting agreement with random length molecular tie chain scission model
    Keywords: STRUCTURAL MECHANICS
    Type: ; TROPHYSICAL JOURNAL
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  • 98
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    Spectrum of the extra-galactic background radiation at low radio frequencies (1970)
    In:  Other Sources
    Details
    Publication Date: 2011-08-16
    Description: Extragalactic LF background radiation spectra, using model for free-free absorption in galactic disk
    Keywords: SPACE RADIATION
    Type: ; YAL SOCIETY (
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  • 99
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    Galactic scattering and discrete sources as possible origins of the diffuse galactic X- ray background (1970)
    In:  Other Sources
    Details
    Publication Date: 2011-08-16
    Description: Diffuse galactic X ray background intensity as function of galactic scattering and discrete sources
    Keywords: SPACE RADIATION
    Type: ; 93 (
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  • 100
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    An optimum design for the instability of cylindrical shells under lateral pressure (1970)
    In:  Other Sources
    Details
    Publication Date: 2011-08-16
    Description: Optimum design for buckling prevention in cylindrical shells under lateral pressure
    Keywords: STRUCTURAL MECHANICS
    Type: BL. IN STRESS ANALYSIS AND OPTIMUM DESIGN FEB. 1970 (SEE N71-24642 13-32) 13-32/
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