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On µ Mesons in Extensive Air Showers at Sea Level

Journal Article · · Journal of the Physical Society of Japan
DOI:https://doi.org/10.1143/JPSJ.17.745· OSTI ID:4824241
The lateral distribution of mu mesons in extensive air showers (EAS), as well as their energy spectrum and the relation between the total number of mu mesons and that of charged particles, are studied utilizing accurate data on EAS. The total number of mu mesons in EAS fluctuates over an order of magnitude in a given shower size. The lateral distribution of mu mesons does not seem to fluctuate, in spite of the fluctuation of the starting point of EAS. The experimental results are compared with calculations based on a simple model of development of EAS. It is concluded that the attenuation length of the nuclear active particles, which corresponds to mu mesons with an average energy of about 10 Bev, is 200 to 250 g cm-2 in air.
Research Organization:
Tokyo Univ.
Sponsoring Organization:
USDOE
NSA Number:
NSA-16-022840
OSTI ID:
4824241
Journal Information:
Journal of the Physical Society of Japan, Journal Name: Journal of the Physical Society of Japan Journal Issue: 5 Vol. 17; ISSN 0031-9015
Publisher:
Physical Society of Japan
Country of Publication:
Country unknown/Code not available
Language:
English

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