Cosmic-ray energy spectrum around the knee obtained by the Tibet experiment and future prospects

doi:10.1016/j.asr.2010.08.029

IHEP OpenIR > 粒子天体物理中心

	Cosmic-ray energy spectrum around the knee obtained by the Tibet experiment and future prospects
	Tibet ASGamma Collaboration
	2011
发表期刊	ADVANCES IN SPACE RESEARCH (IF:1.401[JCR-2016],1.463[5-Year])
卷号	47 期号:4 页码:629-639
通讯作者	Katayose, Y (reprint author), Yokohama Natl Univ, Fac Engn, Yokohama, Kanagawa 2408501, Japan.
摘要	The observation of the extensive air showers has been carried out since 1990 by Tibet air-shower array to study the origin of the cosmic-rays. In order to investigate the chemical composition around the knee, air-shower core detector was used in two experimental phases aiming to separate light primary elements (proton and helium). In a first phase experiment made in 1996-1999, primary proton and helium spectra were measured using a hybrid detector consisted of Tibet II air-shower array, emulsion chambers, and burst detectors. The result indicated that the fraction of light elements among the all particle spectrum is less than 30%. We performed the second phase experiment in 2002-2005 to measure proton + helium together to confirm the previous result with higher statistics by improving the detection efficiency for the air-shower cores. The P + He spectrum was obtained in a good agreement with previous result by several times higher statistics. The flux of the light elements, together with the all-particle energy spectrum, indicates the dominance of nuclei heavier than helium in the energy range around the knee. We also present the outline of the next phase experiment, which is to measure the heavy elements around the knee, using low threshold air-shower core detector named YAC. (C) 2010 COSPAR. Published by Elsevier Ltd. All rights reserved.
关键词	AIR-SHOWER ARRAY PRIMARY PROTON SPECTRUM SHOCK ACCELERATION GAMMA-RAYS TEV RANGE
学科领域	Astronomy & Astrophysics; Geology; Meteorology & Atmospheric Sciences
DOI	10.1016/j.asr.2010.08.029
收录类别	SCI ; ADS ; INSPIREHEP
语种	英语
WOS类目	Astronomy & Astrophysics ; Geosciences, Multidisciplinary ; Meteorology & Atmospheric Sciences
WOS记录号	WOS:000287433100008
ADS Bibcode	2011AdSpR..47..629T
ADS URL	https://ui.adsabs.harvard.edu/abs/2011AdSpR..47..629T
ADS引文	https://ui.adsabs.harvard.edu/abs/2011AdSpR..47..629T/citations
INSPIRE ID	891451
INSPIRE URL	https://inspirehep.net/literature/891451
引用统计	正在获取... 被引频次：32 [INSPIRE] 被引频次：29 [ADS]
文献类型	期刊论文
条目标识符	https://ir.ihep.ac.cn/handle/311005/213017
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
第一作者单位	中国科学院高能物理研究所
推荐引用方式 GB/T 7714	Tibet ASGamma Collaboration. Cosmic-ray energy spectrum around the knee obtained by the Tibet experiment and future prospects[J]. ADVANCES IN SPACE RESEARCH,2011,47(4):629-639.
APA	Tibet ASGamma Collaboration.(2011).Cosmic-ray energy spectrum around the knee obtained by the Tibet experiment and future prospects.ADVANCES IN SPACE RESEARCH,47(4),629-639.
MLA	Tibet ASGamma Collaboration."Cosmic-ray energy spectrum around the knee obtained by the Tibet experiment and future prospects".ADVANCES IN SPACE RESEARCH 47.4(2011):629-639.