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  • 1
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    Fatigue-failure load indicator (1977)
    In:  Other Sources
    Details
    Publication Date: 2019-06-28
    Description: Device easily and economically records loads at instant of failure.
    Keywords: MECHANICS
    Type: LAR-12027 , NASA Tech Briefs (ISSN 0145-319X); 2; 2; P. 3
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  • 2
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    Integrated steam systems for electric power generation from waste heat (1977)
    In:  Other Sources
    Details
    Publication Date: 2011-08-17
    Keywords: ENVIRONMENT POLLUTION
    Type: NASA. Washington Proc. of Conf. on Waste Heat Management and Util., Vol. 3; 15 p
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  • 3
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    The influence of autoionization accompanied by excitation on the dielectronic recombination and the ionization equilibrium of silicon ions (1977)
    In:  Other Sources
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    Publication Date: 2011-08-17
    Description: The dielectronic recombination rate coefficients have been calculated for the various ionization stages of silicon. Account has been taken of all stabilizing radiative transitions and all autoionization processes which involve a single-electron electric-dipole transition of the recombining ion core. For certain ions the dielectronic recombination rates, although still larger than the direct radiative recombination rates, are found to be substantially reduced when account is taken of the effects of a previously neglected autoionization process in which the excited recombining ion core undergoes a delta n = 0 transition to a lower excited state. The temperatures at which these ions have their maximum abundance in corona equilibrium are significantly reduced when use is made of the new dielectronic recombination rates. Calculations are also presented for the total rates of radiative energy loss from isothermal steady-state plasmas due to the line and continuum emission of silicon ions.
    Keywords: ATOMIC AND MOLECULAR PHYSICS
    Type: Astrophysical Journal; vol. 215
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  • 4
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    Solar power satellite transportation (1977)
    In:  Other Sources
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    Publication Date: 2011-08-17
    Description: Preliminary studies and concepts are discussed relative to the feasibility and economics of developing the capability to transport a network of operational 10-GWe solar power satellites into geosynchronous orbit by A.D. 2025. The satellite is briefly described, and its space transportation options are presented. Launch vehicle requirements and concepts are discussed in relationship to the transportation task.
    Keywords: SPACE TRANSPORTATION
    Type: Acta Astronautica; 4; Jan
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  • 5
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    Oxygen impurity radiation from Tokamak-like plasmas (1977)
    In:  Other Sources
    Details
    Publication Date: 2011-08-17
    Description: We have constructed a nonhydrodynamic coronal model for calculating radiation from impurity atoms in a heated plasma. Some recent developments in the calculation of dielectronic recombination rate coefficients and collisional excitation rate coefficients are included. The model is applied to oxygen impurity radiation during the first few milliseconds of a TFR Tokamak plasma discharge, and good agreement with experimental results is obtained. Estimates of total line and continuum radiation from the oxygen impurity are given. It is shown that impurity radiation represents a considerable energy loss.
    Keywords: PLASMA PHYSICS
    Type: Journal of Quantitative Spectroscopy and Radiative Transfer; 17; Mar. 197
    Format: text
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  • 6
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    A temperature dependent kinetics study of the reaction of OH with CH2ClF, CHCl2F, CHClF2, CH3CCl3, CH3CF2Cl, and CF2ClCFCl2 (1977)
    In:  Other Sources
    Details
    Publication Date: 2011-08-17
    Keywords: INORGANIC AND PHYSICAL CHEMISTRY
    Type: Journal of Physical Chemistry; 81; Feb. 10
    Format: text
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  • 7
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    Yes, Kakangari is a unique chondrite (1977)
    In:  Other Sources
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    Publication Date: 2011-08-17
    Description: The position of the Kakangari chondrite as the representative of a new class of chondrites is considered, taking into account the results of the analysis of a 17.1-mg piece of Kakangari for 20 elements. Elemental concentration data are compared for Kakangari and other meteorite groups. Data for the most similar groups, C2, C3(V), L, and E4 chondrites are represented in a graph along with Kakangari data. It is found that pronounced differences exist between Kakangari and the other meteorite classes.
    Keywords: LUNAR AND PLANETARY EXPLORATION
    Type: Nature; 265; Jan. 20
    Format: text
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  • 8
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    A quantum yield determination of O/1D/ production from ozone via laser flash photolysis (1977)
    In:  Other Sources
    Details
    Publication Date: 2011-08-17
    Description: The quantum yield of electronically excited atomic oxygen produced from ozone photolysis was measured at 298 K from wavelengths of 293.0 to 316.5 nm. The reaction of the atomic oxygen with N2O to form excited NO2 was used to monitor the O production; a frequency-doubled flashlamp-pumped dye laser which provided tunable ultraviolet in the desired spectral region with 0.1-nm linewidth served as the photolysis source. The atomic oxygen quantum yield was found to be constant below 300 nm, with a sharp decrease centered at 308 nm and a diminution to less than one tenth of the constant value by 313.5 nm.
    Keywords: INORGANIC AND PHYSICAL CHEMISTRY
    Type: Journal of Chemical Physics; 67; Oct. 1
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  • 9
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    Social aspects of regulating waste heat (1977)
    In:  Other Sources
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    Publication Date: 2011-08-17
    Keywords: ENVIRONMENT POLLUTION
    Type: NASA, Washington Proc. of the Conf. on Waste Heat Management and Util., Volume 1; 17 p
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  • 10
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    High resolution absorption cross sections for the A2Pi-X2Pi system of ClO (1977)
    In:  Other Sources
    Details
    Publication Date: 2011-08-17
    Description: High-resolution ultraviolet absorption cross-sections for the ClO molecule are obtained, with the aim of facilitating studies of ozone depletion resulting from the injection of chlorofluorocarbons into the atmosphere. The spectroscopic analysis, which involves a frequency-doubled tunable dye laser with a bandwidth of 0.015 A, is described. Studies of the rotational lines of the ClO A 2Pi 3/2-X2Pi 3/2 9-10 band were conducted. Peak cross-sections for the P and R lines of the 9-0 band are found to be 10.0, 9.6, 8.6, 10.6, 10.3, and 9.2 times ten to the negative seventeenth power cm squared, with estimated accuracy of plus or minus 25%. Problems in distinguishing between Cl-35 and Cl-37 absorption are also considered.
    Keywords: ATOMIC AND MOLECULAR PHYSICS
    Type: Chemical Physics Letters; 50; Aug. 15
    Format: text
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