CHARACTERISTICS OF HIGH-ENERGY NUCLEAR INTERACTIONS AT AND ABOVE 10$sup 14$ eV
An attempt was made to explain the changes in slope of the gamma ray energy spectrum around gamma energies of 1000 Bev at 220 g/cm/sup 2/ and 740 g/ cm/sup 2/ from the top of the atmosphere, the change in slope of the extensive air shower density spectrum at sea level at densities of about 1000 particles/ m/ sup 2/, the double change in slope of the energy spectrum of gamma rays from local nuclear interactions at 220 g/cm/sup 2/, the absence of such a change at sea level, and the mu -meson spectrum at sea level. The cascade theory developed by Fukuda, Ogita, and Ueda was used together with the following basic hypotheses: in a nucleon-nucleon collision the maximum pion energy in the CMS is about 25 Bev, the fractional energy going into the pion component decreases with increasing primary energy (from 30% at 500 Bev to 5% at 5 x 10/sup 7/ Bev), and at very high energies a large fraction of the energy goes into a few heavier particles and thence some of this, via the SIGMA /sup 0/0, into the electromagnetic cascade. Good agreement between theoretical predictions and experimental results was obtained. (auth)
- Research Organization:
- Univ. of Sydney
- NSA Number:
- NSA-15-028328
- OSTI ID:
- 4841530
- Journal Information:
- Nuclear Phys., Journal Name: Nuclear Phys. Vol. Vol: 26
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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