High Energy Hadrons in Atmospheric Cosmic Rays Observed with Fe Emulsion Chambers

Zhang Naijian; Wang Chengrui; He Mao; Cao Peiyuan; Li Jinyu; Zou Baotangj Wang Guangjun; Wei Chao

Chinese Physics C> 1989, Vol. 13> Issue(S4) : 357-362

High Energy Hadrons in Atmospheric Cosmic Rays Observed with Fe Emulsion Chambers

High Energy Physics Group, Shandong University, Jinan

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Abstract：
A part of K4 (1984-1985) Fe emulsion chambers exposed at Mt Kanbala (altitude 5500 m, atmospheric depth 520 g/cm²) by China-Japan Emulsion Chamber Collaboration has been analyzed with systematic scanning and measurement The distribution of the starting depths of the observed showers is given. The zenith angle distribution, vertical intensity, energy spectrum and attenuation length of hadrons in air and in iron are presented. Our results are compared with the recent data given by other experiments, and they are approximately consistent with each other.

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Zhang Naijian, Wang Chengrui, He Mao, Cao Peiyuan, Li Jinyu, Zou Baotangj Wang Guangjun and Wei Chao. High Energy Hadrons in Atmospheric Cosmic Rays Observed with Fe Emulsion Chambers[J]. Chinese Physics C, 1989, 13(S4): 357-362.

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Received: 1989-01-30

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Supported by the National Natural Science Foundation of China.

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沈阳化工大学材料科学与工程学院沈阳 110142

High Energy Hadrons in Atmospheric Cosmic Rays Observed with Fe Emulsion Chambers

High Energy Physics Group, Shandong University, Jinan

Received Date: 1989-01-30

Fund Project: Supported by the National Natural Science Foundation of China.

Abstract: A part of K4 (1984-1985) Fe emulsion chambers exposed at Mt Kanbala (altitude 5500 m, atmospheric depth 520 g/cm²) by China-Japan Emulsion Chamber Collaboration has been analyzed with systematic scanning and measurement The distribution of the starting depths of the observed showers is given. The zenith angle distribution, vertical intensity, energy spectrum and attenuation length of hadrons in air and in iron are presented. Our results are compared with the recent data given by other experiments, and they are approximately consistent with each other.