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Helium in near Earth orbit
AMS Collaboration
2000
发表期刊PHYSICS LETTERS B
卷号494期号:3-4页码:#REF!
通讯作者Alcaraz, J (reprint author), CIEMAT, E-28040 Madrid, Spain.
文章类型Article
摘要The helium spectrum from 0.1 to 100 GeV/nucleon was measured by the Alpha Magnetic Spectrometer (AMS) during space shuttle flight STS-91 at altitudes near 380 km. Above the geomagnetic cutoff the spectrum is parameterized by a power law. Below the geomagnetic cutoff a second helium spectrum was observed. In the second helium spectra over the energy range 0.1 to 1.2 GeV/nucleon the flux was measured to be (6.3 +/- 0.9) x 10(-3) (m(2) sec sr)(-1) and more than ninety percent of the helium was determined to be He-3 (at the 90% CL). Tracing helium from the second spectrum shows that about half of the 3He travel for an extended period of time in the geomagnetic field and that they originate from restricted geographic regions similar to protons and positrons. (C) 2000 Published by Elsevier Science B.V.
学科领域Physics
DOI10.1016/S0370-2693(00)01193-X
收录类别SCI
WOS类目Physics, Multidisciplinary
WOS记录号WOS:000165679400004
引用统计
被引频次:150[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/311005/226845
专题粒子天体物理中心
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GB/T 7714
AMS Collaboration. Helium in near Earth orbit[J]. PHYSICS LETTERS B,2000,494(3-4):#REF!.
APA AMS Collaboration.(2000).Helium in near Earth orbit.PHYSICS LETTERS B,494(3-4),#REF!.
MLA AMS Collaboration."Helium in near Earth orbit".PHYSICS LETTERS B 494.3-4(2000):#REF!.
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