Computer Science – Sound
Scientific paper
Jul 1980
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980apj...239..712s&link_type=abstract
Astrophysical Journal, Part 1, vol. 239, July 15, 1980, p. 712-724. Bundesministerium für Forschung und Technologie
Computer Science
Sound
74
Cosmic Rays, Energy Spectra, Nuclei (Nuclear Physics), Backscattering, Balloon Sounding, Balloon-Borne Instruments, Cerenkov Counters, Energy Distribution, Monte Carlo Method
Scientific paper
Energy spectra of cosmic-ray nuclei boron to iron have been measured from 2 GeV per nucleon to beyond 100 GeV per nucleon. The data were obtained using an ionization calorimeter flown on a balloon from Palestine, Texas. The 3450 kg payload floated at 7 g/sq cm for almost 24 hours. The results are in excellent agreement with those of other workers where overlaps exist. The spectra are not consistent with single power laws, and demonstrate the power of using a single technique sensitive over a large dynamic range. The data are consistent with the leaky box model of cosmic-ray propagation. The boron data indicate that the cosmic-ray escape length decreases with increasing energy as E to the -(0.4 + or - 0.1) up to 100 GeV per nucleon. Secondary nuclei from iron are also consistent with this dependence. Predicted changes in the energy dependence of the ratios of primary nuclei O/C and (Fe + Ni)/(C + O) are also observed.
Arens John F.
Balasubrahmanyan V. K.
Ormes Johnathan F.
Schmidt Wolfgang K. H.
Simon Manfred
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