Computer Science – Sound
Scientific paper
Mar 1977
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977ap%26ss..47..163m&link_type=abstract
Astrophysics and Space Science, vol. 47, Mar. 1977, p. 163-184. Research supported by the University of Maryland;
Computer Science
Sound
28
Cosmic Rays, Energy Spectra, Radiation Spectra, Spectrum Analysis, Balloon Sounding, Chemical Composition, Kinetic Energy, Secondary Cosmic Rays
Scientific paper
The differential kinetic-energy spectra of cosmic-ray nuclei in the charge range from 4 to 28 are determined using data obtained from a high-altitude balloonborne detector. The data are derived from the response of an acrylic plastic Cerenkov counter and cover the kinetic-energy range from 400 to 2100 MeV/amu. A Cerenkov pulse-height histogram is obtained for each charge, and the kinetic-energy spectra are derived by means of a formal mathematical deconvolution of these histograms. Results of the deconvolution calculation extrapolated to the top of the atmosphere are presented for the most abundant nuclei; it is found that the spectra are not amenable to representation by spectral indices, so the relative spectra of the different elements are compared by evaluating the charge ratios as a function of energy. The results show that secondary/primary ratios decrease with increasing energy, while primary/primary ratios are constant for Z of 6 to 10 and 14 to 26 but vary for Z of 10 to 14. It is concluded that the data seem to indicate more than one cosmic-ray source region.
Fisher Andrew J.
Hagen F. A.
Maehl R. C.
Ormes Johnathan F.
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