Physics – Nuclear Physics
Scientific paper
Dec 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985jpsj...54.4502s&link_type=abstract
Physical Society of Japan, Journal (ISSN 0031-9015), vol. 54, Dec. 1985, p. 4502-4505.
Physics
Nuclear Physics
3
Cosmic Rays, Energy Spectra, Iron, Nuclear Emulsions, Nuclei (Nuclear Physics), Balloon-Borne Instruments, Calibrating
Scientific paper
Energy spectrum of cosmic-ray Fe-nucleus has been measured from 4 GeV/n to beyond 100 GeV/n. The data were obtained using emulsion chambers exposed by a balloon launched from Sanriku, Japan. The energy of Fe nuclei was estimated by the opening angle method, the calibration of which was made using accelerator beams of 1.88 GeV/n Fe. The spectral index of Fe obtained is -2.45 + or - 0.04 in the range from 10 to 200 GeV/n, confirming the previous results obtained by different methods and proving the powerfulness of the opening angle method for cosmic rays.
Ohta Izumi
Sato Yuzuru
Shimada E.
Tanaka Sachiko
Tasaka Shigeki
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