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The all-particle spectrum of primary cosmic rays in the wide energy range from 10(14) to 10(17) eV observed with the Tibet-III air-shower array
Tibet ASGamma Collaboration
2008
发表期刊ASTROPHYSICAL JOURNAL
卷号678期号:2页码:1165-1179
通讯作者Amenomori, M (reprint author), Hirosaki Univ, Dept Phys, Hirosaki, Aomori 0368561, Japan.
摘要We present an updated all-particle energy spectrum of primary cosmic rays in a wide range from 10(14) to 10(17) eV using 5.5 x 107 events collected from 2000 November through 2004 October by the Tibet-III air-shower array located 4300 m above sea level (an atmospheric depth of 606 g cm(-2)). The size spectrum exhibits a sharp knee at a corresponding primary energy around 4 PeV. This work uses increased statistics and new simulation calculations for the analysis. We discuss our extensive Monte Carlo calculations and the model dependencies involved in the final result, assuming interaction models QGSJET01c and SIBYLL2.1, and heavy dominant (HD) and proton dominant (PD) primary composition models. Pure proton and pure iron primary models are also examined as extreme cases. A detector simulation was also performed to improve our accuracy in determining the size of the air showers and the energy of the primary particle. We confirmed that the all-particle energy spectra obtained under various plausible model parameters are not significantly different from each other, which was the expected result given the characteristics of the experiment at high altitude, where the air showers of the primary energy around the knee reach near-maximum development, with their features dominated by electromagnetic components, leading to a weak dependence on the interaction model or the primary mass. This is the highest statistical and the best systematics-controlled measurement covering the widest energy range around the knee energy region.
关键词CHEMICAL-COMPOSITION LHCF EXPERIMENT KNEE TEV PERFORMANCE SEARCH PROTON REGION AKENO
学科领域Astronomy & Astrophysics
DOI10.1086/529514
收录类别SCI
语种英语
WOS类目Astronomy & Astrophysics
WOS记录号WOS:000255438800050
引用统计
被引频次:93[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/212850
专题粒子天体物理中心
作者单位中国科学院高能物理研究所
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Tibet ASGamma Collaboration. The all-particle spectrum of primary cosmic rays in the wide energy range from 10(14) to 10(17) eV observed with the Tibet-III air-shower array[J]. ASTROPHYSICAL JOURNAL,2008,678(2):1165-1179.
APA Tibet ASGamma Collaboration.(2008).The all-particle spectrum of primary cosmic rays in the wide energy range from 10(14) to 10(17) eV observed with the Tibet-III air-shower array.ASTROPHYSICAL JOURNAL,678(2),1165-1179.
MLA Tibet ASGamma Collaboration."The all-particle spectrum of primary cosmic rays in the wide energy range from 10(14) to 10(17) eV observed with the Tibet-III air-shower array".ASTROPHYSICAL JOURNAL 678.2(2008):1165-1179.
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