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  • SPACE RADIATION  (429)
  • 2020-2023
  • 1970-1974  (429)
  • 1950-1954
  • 1972  (429)
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  • 2020-2023
  • 1970-1974  (429)
  • 1950-1954
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  • 1
    Publication Date: 2019-08-28
    Keywords: SPACE RADIATION
    Type: NASA-TT-F-14312
    Format: text
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  • 2
    Publication Date: 2019-07-13
    Keywords: SPACE RADIATION
    Type: International Conference on Cosmic Rays; Aug 16, 1971 - Aug 25, 1971; Hobart, Tasmania; Australia
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  • 3
    Publication Date: 2019-07-13
    Keywords: SPACE RADIATION
    Type: International Conference on Cosmic Rays; Aug 16, 1971 - Aug 25, 1971; Hobart, Tasmania; Australia
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  • 4
    Publication Date: 2019-07-13
    Keywords: SPACE RADIATION
    Type: International Conference on Cosmic Rays; Aug 16, 1971 - Aug 25, 1971; Hobart, Tasmania; Australia
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  • 5
    Publication Date: 2019-07-13
    Description: Tracks of 1000 solar particles with charge Z not less than 10 and tracks of about 150 particles with Z equal to 8 have been analyzed in a stack of plastic detectors exposed in a rocket during the solar flare of Jan. 25, 1971. The energy spectra peak at about 1.5 MeV/nuc, with the flux falling to zero at about 0.4 MeV/nuc. Fe, Si, and O appear to have similar energy spectra for energies between 2 and 12 MeV/nuc.
    Keywords: SPACE RADIATION
    Type: International Conference on Cosmic Rays; Aug 16, 1971 - Aug 25, 1971; Hobart, Tasmania; Australia
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  • 6
    Publication Date: 2019-07-13
    Description: A 2 g/sq cm stack (22 sq m in area) containing 41 plastic sheets, one G-5 emulsion, and one high-speed Cerenkov film detector was launched by balloon from Minneapolis on Sept. 4, 1970. The stack received an effective exposure of 48 hr at 2.8 mbar and a cutoff rigidity of about 1.8 GV. The abundance ratios relative to Fe are reported for various charges and charge groups from Z = 29 to 105 on the basis of 70 presently measured events as well as previously obtained results. Between Fe and the Pt peak, the cosmic ray abundances appear to be similar to solar system abundances; the heavier nuclei are strongly overabundant and appear to have originated about 10 m.y. ago in a rapid neutron capture process.
    Keywords: SPACE RADIATION
    Type: International Conference on Cosmic Rays; Aug 16, 1971 - Aug 25, 1971; Hobart, Tasmania; Australia
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  • 7
    Publication Date: 2019-07-13
    Description: The present status of knowledge concerning the impulsive and the continuous emission of solar gamma rays and neutrons is reviewed in the light of the recent solar activity in early August 1972. The gamma ray spectrometer on OSO-7 has observed the sun continuously for most of the activity period except for occultation by the earth. In association with the 2B flare on 4 August 1972 and the 3B flare on 7 August 1972, the monitor provides evidence for solar gamma ray line emission in the energy range from 300 keV to 10 MeV. A summary of all the results available from preliminary analysis of the data will be given. Significant improvements in future experiments can be made with more sensitive instruments and more extensive time coverage of the sun.
    Keywords: SPACE RADIATION
    Type: NASA-CR-131866 , MPI-PAE/EXTRATERR-77 , Symp. on High Energy Phenomena on the Sun; Sep 28, 1972 - Sep 30, 1972; Greenbelt, MD; United States
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  • 8
    Publication Date: 2019-07-13
    Description: A spectrophotometer for monitoring the solar EUV in three broad wavelength bands is described. The kind of data obtained, along with sources of error, are presented. The content of the tape library which contains the data is outlined. The scientific results are discussed. These include the following: solar flares in the EUV, solar eclipse observations in the EUV, SFD's and relationship to solar flares, and the application of satellite sunrise and sunset data for the study of model upper atmospheres for the earth.
    Keywords: SPACE RADIATION
    Type: NASA-CR-130159
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  • 9
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    In:  CASI
    Publication Date: 2019-07-13
    Description: An ion sensitive emulsion detection system has been considered for use in a cycloidal focusing mass spectrometer to measure the various atomic species which comprise the solar plasma. The responses of Ilford Q2 and Kodak SC7 emulsions were measured with N(+) ions at 6 keV to 10 keV, He(++) ions at 750 eV to 2500 eV, and H(+) ions at 550 eV to 1400 eV. These ions have the approximate range of velocities (about 300-500 km/sec) encountered in the solar wind. The work was carried out on a specially prepared magnetic sector mass analyzer. Characteristic response curves were generated, each one utilizing approximately 50 data points at three or more current densities. In addition to the ion response, measurements of the response of these emulsions to a photon flux simulating the visible portion of the solar spectrum were made. The results obtained will be presented in detail and interpreted in relation to other data available for these emulsions.
    Keywords: SPACE RADIATION
    Type: NASA-CR-130134
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  • 10
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    In:  CASI
    Publication Date: 2019-07-13
    Description: The performance of the solar wind near one astronomical unit is discussed. The solar wind is shown to act as a compressible, supersonic, magnetogasdynamic fluid. The creation of magnetogasdynamic shock waves by solar flares and other causes is analyzed. The observations of shock fronts and the flows behind these fronts are discussed and synoptic views of the observations are described. Theoretical concepts and models are summarized.
    Keywords: SPACE RADIATION
    Type: NASA-TM-X-66106 , X-692-72-395 , Conf. on Flare-Produced Shock Waves in the Corona and Interplanetary Space; Jan 01, 1972; Boulder, CO; United States
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