Computer Science
Scientific paper
Jun 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993eme..work...17a&link_type=abstract
In Tokyo Univ., Contributions to the 23rd ICRC from emulsion Chamber Experiments at Mt. Chacaltaya and Pamirs p 17-20 (SEE N94-2
Computer Science
Cosmic Ray Showers, Hadrons, High Altitude, High Energy Interactions, Radiation Measuring Instruments, Space Observations (From Earth), Charged Particles, Energy Distribution, Flux (Rate), Gamma Rays, High Altitude Environments, Lead (Metal)
Scientific paper
This report describes the experimental results on the characteristics of atmospheric and local hadron interactions through the observation of high energy cosmic-ray hadrons in uniform-type thick lead chambers (containing 60 cm-thick lead) exposed at Pamir. The global feature of atmospheric hadron interactions through the observed cosmic-ray hadron flux were studied by comparing it with the simulation calculation results. The simulations are conducted on the models constructed on the basis of the knowledge obtained in lower energy accelerator experiments. Two of the models, both of which assume scaling type pion multiple production, are studied. Observed hadron-induced showers belong to either of the two categories, due to singly arriving hadrons and those associated with families. A 'family' is defined as a group composed of at least two parallelly arriving showers satisfying the condition in which their respective visible energies are not less than detection threshold energy. The cosmic-ray has been repeatedly studied at high mountain altitudes, Charataya and Pamir, with various types of chambers, and the flux value obtained at the Pamirs in this experiment is consistent. It is quite striking that not only high energy cosmic-ray family flux but also hadron flux is much smaller than expected value on the extrapolation of the knowledge on hadron interactions observed in the lower energy accelerator experiments.
Arisawa T.
Fujimoto Yukihiro
Fujiwara Hideaki
Hasegawa Satoshi
Honda Katsuya
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