On the Nucleonic Components producing Large Cosmic-Ray Bursts under Thick Shield

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概要

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• By analysing the size-frequency distributions of large cosmic ray bursts obtained at three stations by SRI ion chambers, it is concluded that : a)about 40% of the total bursts at sea level are those induced by N-rays, and the portion of them decreases with increasing size, b)apsorption mean free path of burst-producing N-rays is 120 g / cm^2 in air, and decreases with increasing size, approaching to collision mean free path of air. Moreover, from the comparison of our results with others, it is shown that the absorption mean free path of burst-producing N-rays near sea level is not same as that at high altitude, but it elongates near sea level. Some discussions on burst production are presented in connection with our results.

• 理論物理学刊行会の論文

著者

• Wada Masami

  Kobe University And Scientific Research Institute

• Kameda Tadashi

  Kobe University And Scientific Research Institute

関連論文

• On the Nucleonic Components producing Large Cosmic-Ray Bursts under Thick Shield

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