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  • 1
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    Effect of the Mott cross section on charge identification in the HEAO-3 Heavy Cosmic Ray Experiment (1984)
    In:  Other Sources
    Details
    Publication Date: 2011-08-19
    Description: Corrections to the Z-squared dependence of ion chamber and Cherenkov response due to the Mott cross section are calculated for the HEAO-3 Heavy Cosmic Ray Experiment. The effect of the production and escape of high energy secondary electrons on detector response is accounted for by numerical calculations. These secondary electron effects are shown to influence the size of the non Z-squared effects and thus affect the charge assignments and detector resolution. The Bloch and relativistic Bloch corrections are not included in the results presented here but may be combined with the Mott corrections when the Bloch corrections are properly evaluated.
    Keywords: SPACE RADIATION
    Type: Nuclear Instruments and Methods in Physics Research (ISSN 0167-5087); 225; 185-194
    Format: text
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    NASA TECHNICAL REPORTS
  • 2
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    Relativistic rise measurement for heavy cosmic rays in xenon (1982)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: Potential advantages of the use of the relativistic rise of energy loss in gas-filled counters for cosmic ray energy measurement have been noted by Tueller et al. (1979) and Gregory and Parnell (1979). Gregory and Parnell have reported measurements on the relativistic rise for cosmic ray iron nuclei in parallel plate ionization chambers 8.4 cm thick filled with a xenon and methane mixture. The present investigation is concerned with the observed rise and ionization signal fluctuations for a sample of elements from carbon through iron in the cosmic rays. The results are compared with a calculation of the energy deposit within the ion chamber.
    Keywords: SPACE RADIATION
    Type: International Cosmic Ray Conference; Jul 13, 1981 - Jul 25, 1981; Paris; France
    Format: text
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    NASA TECHNICAL REPORTS
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