Primary Energy Spectrum of Cosmic Ray at the

Luo Guangxuan; Tan Youheng; Zhang Chunsheng; Dong Yuju; Yuan Peng; Zhang Huimin; Wang Hui; Yuan Yukui; Li Jing

Chinese Physics C> 1995, Vol. 19> Issue(9) : 769-774

Primary Energy Spectrum of Cosmic Ray at the

Institute of High Energy Physics, The Chinese Academy of Sciences, Beijing, 100039

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Abstract：
650 thousands of EAS events recorded by Huairou EAS Array have been analysed carefully. The Size spectrum and primary energy spectrum in the region from 10¹⁵ to 10¹⁶eV are obtained. The energy spectrum shows a clear and smooth "Knee" structure around 3×10¹⁵eV. Except the smooth steep feature of "Knee", it is consistent very well with Akeno spectrum. Under the assumption of so-called rigidity dependent cut model, by adjusting the breaking energy Ec of primary proton spectrum in the Monte Carlo simulation and comparing with the experimental spectrum, we found that the proper value of E_c is in the energy range from 160 to 240TeV.

References

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Luo Guangxuan, Tan Youheng, Zhang Chunsheng, Dong Yuju, Yuan Peng, Zhang Huimin, Wang Hui, Yuan Yukui and Li Jing. Primary Energy Spectrum of Cosmic Ray at the[J]. Chinese Physics C, 1995, 19(9): 769-774.

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Received: 1900-01-01
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通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

Primary Energy Spectrum of Cosmic Ray at the

Corresponding author: Luo Guangxuan,

Institute of High Energy Physics, The Chinese Academy of Sciences, Beijing, 100039

Received Date: 1900-01-01

Accepted Date: 1900-01-01

Available Online: 1995-09-05

Abstract: 650 thousands of EAS events recorded by Huairou EAS Array have been analysed carefully. The Size spectrum and primary energy spectrum in the region from 10¹⁵ to 10¹⁶eV are obtained. The energy spectrum shows a clear and smooth "Knee" structure around 3×10¹⁵eV. Except the smooth steep feature of "Knee", it is consistent very well with Akeno spectrum. Under the assumption of so-called rigidity dependent cut model, by adjusting the breaking energy Ec of primary proton spectrum in the Monte Carlo simulation and comparing with the experimental spectrum, we found that the proper value of E_c is in the energy range from 160 to 240TeV.

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