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Primary proton spectrum between 200 TeV and 1000 TeV observed with the Tibet burst detector and air shower array
Tibet ASγ Collaboration
2000
发表期刊PHYSICAL REVIEW D
卷号62期号:11页码:112002
通讯作者Amenomori, M (reprint author), Hirosaki Univ, Dept Phys, Hirosaki, Aomori 0368561, Japan.
摘要Since 1996, a hybrid experiment consisting of the emulsion chamber and burst detector array and the Tibet-II air-shower array has been operated at Yangbajing (4300 m above sea level, 606 g/cm(2)) in Tibet. This experiment can detect air-shower cores, called bunt events. accompanied by air showers in excess of about 100 TeV. We observed about 4300 burst events accompanied by air showers during 690 days of operation and selected 820 proton-induced events with its primary energy above 200 TeV using a neural network method. Using this data set, we obtained the energy spectrum of primary protons in the energy range from 200 to 1000 TeV. The differential energy spectrum obtained in this energy region can be fitted by a power law with the index of - 2.97 +/- 0.06, which is steeper than that obtained by direct measurements at lower energies. We also obtained the energy spectrum of helium nuclei at particle energies around 1000 TeV.
文章类型Article
学科领域Astronomy & Astrophysics; Physics
DOI10.1103/PhysRevD.62.112002
收录类别SCI
WOS类目Astronomy & Astrophysics ; Physics, Particles & Fields
WOS记录号WOS:000165612800006
引用统计
被引频次:51[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/311005/227961
专题粒子天体物理中心
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Tibet ASγ Collaboration. Primary proton spectrum between 200 TeV and 1000 TeV observed with the Tibet burst detector and air shower array[J]. PHYSICAL REVIEW D,2000,62(11):112002.
APA Tibet ASγ Collaboration.(2000).Primary proton spectrum between 200 TeV and 1000 TeV observed with the Tibet burst detector and air shower array.PHYSICAL REVIEW D,62(11),112002.
MLA Tibet ASγ Collaboration."Primary proton spectrum between 200 TeV and 1000 TeV observed with the Tibet burst detector and air shower array".PHYSICAL REVIEW D 62.11(2000):112002.
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