Physics – Nuclear Physics
Scientific paper
Aug 1980
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980ap%26ss..71..135b&link_type=abstract
Astrophysics and Space Science, vol. 71, no. 1, Aug. 1980, p. 135-145. Bundesministerium für Forschung und Technologie
Physics
Nuclear Physics
Balloon-Borne Instruments, Cerenkov Counters, Cosmic Rays, Energy Spectra, Nuclei (Nuclear Physics), Calorimeters, Data Processing, Monte Carlo Method, Scintillation Counters
Scientific paper
The results from a balloon-borne gas Cerenkov counter (threshold 16.5 GeV/nuc) and an ionization spectrometer are presented. The gas Cerenkov counter provides an absolute energy calibration for the response of the calorimeter for the Z range of 5-26 nuclei of cosmic rays. The contribution of scintillation to the gas Cerenkov pulse height has been obtained by independently selecting particles below the gas Cerenkov threshold using the ionization spectrometer. Energy spectra were derived by minimizing the chi-squared between a Monte Carlo simulated data and flight data. Best fit power laws were determined for C, N, O, Ne, Mg, and Si. The power laws, all consistent with E exp-2.7, are not good fits to the data. A better fit is obtained using the spectrum derived from the spectrometer.
Arens John F.
Balasubrahmanyan V. K.
Ormes Johnathan F.
Simon Manfred
Siohan F.
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