Measurement of Cosmic-Ray Antiprotons from 3.7 to 19 GeV
Measurement of Cosmic-Ray Antiprotons from 3.7 to 19 GeV
复制标题
3.7 至 19 GeV 宇宙射线反质子的测量
DOI：
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发表时间：
1996
期刊：
影响因子：
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通讯作者：
R. Streitmatter
中科院分区：
文献类型：
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作者：
M. Hof;W. Menn;C. Pfeifer;M. Simon;R. Golden;S. Stochaj;S. A. Stephens;G. Basini;M. Ricci;F. Massimo Brancaccio;P. Papini;S. Piccardi;P. Spillantini;M. D. de Pascale;A. Morselli;P. Picozza;M. Brunetti;A. Codino;C. Grimani;M. Menichelli;J. Mitchell;J. Ormes;R. Streitmatter
在3.7-19 GeV的能量范围内测量到宇宙射线中的反质子与质子之比，p/p。该测量是使用球载超导磁谱仪沿着与气体切伦科夫计数器、成像量热计和飞行时间闪烁体系统一起进行的。测得的p/p比值为1.24−0.51+0.68 × 10-4。目前的结果，沿着其他最近的观测结果，表明观测到的反质子丰度与宇宙射线在银河系中传播时产生的副产物反质子的模型是一致的。
The antiproton-to-proton ratio, p̄/p, in cosmic rays has been measured in the energy range 3.7-19 GeV. This measurement was carried out using a balloon-borne superconducting magnetic spectrometer along with a gas Cerenkov counter, an imaging calorimeter, and a time-of-flight scintillator system. The measured p̄/p ratio was determined to be 1.24−0.51+0.68 × 10-4. The present result, along with other recent observations, shows that the observed abundances of antiprotons are consistent with models in which antiprotons are produced as secondaries during the propagation of cosmic rays in the Galaxy.