Observation of Superhigh Energy Muons with Large Zenith Angles in Mountain Emulsion Chambers

Fan Xiaoling; Su Shi; Wang Yi

Chinese Physics C> 1991, Vol. 15> Issue(S2) : 109-117

Observation of Superhigh Energy Muons with Large Zenith Angles in Mountain Emulsion Chambers

Fan Xiaoling ¹ ,
Su Shi ¹ ,
Wang Yi ²

1 Institute of High Energy Physics, the Chinese Academy of Sciences, Beijing, China;
2 Department of Physics, Zhengzhou University, Zhengzhou, Henan, China

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After 215 blocks of K6, K7 and K8 lead emulsion chambers of the Mt. Kanbala experiment are carefully scanned, 111 muon events with zenith angle M (=tgθ) ≥ 2.5 are found. The energy of muon showers are determined by saddle-shape curves. The intensity of muons, the shower energy spectrum and the zenith angle distribution of muon showers on the altitude of 5500 m above sea level are obtained in the energy region E_μ ≥ 2 TeV. Meanwhile, the simulation calculation is made in order to study the behavior of muons inside the emulsion chamber. The results of the simulation are basically in agreement with the experiment.

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Fan Xiaoling, Su Shi and Wang Yi. Observation of Superhigh Energy Muons with Large Zenith Angles in Mountain Emulsion Chambers[J]. Chinese Physics C, 1991, 15(S2): 109-117.

Fan Xiaoling, Su Shi and Wang Yi. Observation of Superhigh Energy Muons with Large Zenith Angles in Mountain Emulsion Chambers[J]. Chinese Physics C, 1991, 15(S2): 109-117. shu

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Received: 1990-06-30

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Supported by the National Youth Scientific Research Foundation.

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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

Observation of Superhigh Energy Muons with Large Zenith Angles in Mountain Emulsion Chambers

1 Institute of High Energy Physics, the Chinese Academy of Sciences, Beijing, China;

2 Department of Physics, Zhengzhou University, Zhengzhou, Henan, China

Received Date: 1990-06-30

Fund Project: Supported by the National Youth Scientific Research Foundation.

Abstract: After 215 blocks of K6, K7 and K8 lead emulsion chambers of the Mt. Kanbala experiment are carefully scanned, 111 muon events with zenith angle M (=tgθ) ≥ 2.5 are found. The energy of muon showers are determined by saddle-shape curves. The intensity of muons, the shower energy spectrum and the zenith angle distribution of muon showers on the altitude of 5500 m above sea level are obtained in the energy region E_μ ≥ 2 TeV. Meanwhile, the simulation calculation is made in order to study the behavior of muons inside the emulsion chamber. The results of the simulation are basically in agreement with the experiment.

Observation of Superhigh Energy Muons with Large Zenith Angles in Mountain Emulsion Chambers

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