The Study of Primary Cosmic Ray Mass Composition Around the |
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Authors: | YANG Hong-Tao LIU Jun GENG Qing-Xi LIU Chang-Qin ZHANG Pin GAO Xiao-Yu ZHA Min JING Gui-Ru JING Cai-Liu ZHU Qing-Qi Cheung T Leung K NG L |
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Institution: | Cosmic Ray Research Institute of Yunnan University, Kunming 650091,China2 Institute of High Energy Physics, CAS, Beijing 100049,China3 City University of Hong Kong, Hong Kong, China4 Hong Kong Institute of Education, Hong Kong, China |
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Abstract: | The lg Ne-Nμ relationship has been studied from 4.4×104 events (total observation time is 2.9×106s)collected from Mt. Liang Wang Array (24.5°N, 102.9°E, 2720m above sea level). In order to study the mass composition at the knee, Monte-Carlo simulations for the EAS development and detection under same event selection criteria as used in the experimental data have been performed. The result shows that the mass composition of primary cosmic rays has no obvious change and the dominant component is light nuclei around the knee. |
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