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Measurement of energy muons in EAS at energy region larger thean 10(17) eV (1985)

Matsubara, Y. ; Nagano, M. ; Ohoka, H. ; [et al.]

In: CASI

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Publication Date: 2019-06-28

Description: A measurement of low energy muons in extensive air showers (EAS) (threshold energies are 0.25, 0.5, 0.75 and 1.38 GeV) was carried out. The density under the concrete shielding equivalent to 0.25 GeV at core distance less than 500 m and 0.5 GeV less than 150 m suffers contamination of electromagnetic components. Therefore the thickness of concrete shielding for muon detectors for the giant air shower array is determined to be 0.5 GeV equivalence. Effects of photoproduced muons are found to be negligible in the examined ranges of shower sizes and core distances. The fluctuation of the muon density in 90 sq m is at most 25% between 200 m and 600 m from the core around 10 to the 17th power eV.

Keywords: SPACE RADIATION

Type: HE-4.3-8 , 19th Intern. Cosmic Ray Conf - Vol. 7; p 119-122; NASA-CP-2376-VOL-7

Format: application/pdf

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