The Cosmic-Ray Isotope Spectrometer for the Advanced Composition Explorer

被引：143
作者：
Stone, EC [1 ]
Cohen, CMS
Cook, WR
Cummings, AC
Gauld, B
Kecman, B
Leske, RA
Mewaldt, RA
Thayer, MR
Dougherty, BL
Grumm, RL
Milliken, BD
Radocinski, RG
Wiedenbeck, ME
Christian, ER
Shuman, S
Trexel, H
Von Rosenvinge, TT
Binns, WR
Crary, DJ
Dowkontt, P
Epstein, J
Hink, PL
Klarmann, J
Lijowski, M
Olevitch, MA
机构：
[1] CALTECH, Pasadena, CA 91125 USA
[2] CALTECH, Jet Prop Lab, Pasadena, CA 91109 USA
[3] NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA
[4] Washington Univ, St Louis, MO 63130 USA
来源：
SPACE SCIENCE REVIEWS | 1998年 / 86卷 / 1-4期
关键词：
D O I：
10.1023/A:1005075813033
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
The Cosmic-Ray Isotope Spectrometer is designed to cover the highest decade of the Advanced Composition Explorer's energy interval, from similar to 50 to similar to 500 MeV nucl(-1), with isotopic resolution for elements from Z similar or equal to 2 to Z similar or equal to 30. The nuclei detected in this energy interval are predominantly cosmic rays originating in our Galaxy. This sample of galactic matter can be used to investigate the nucleosynthesis of the parent material. as well as fractionation, acceleration, and transport processes that these particles undergo in the Galaxy and in the interplanetary medium. Charge and mass identification with CRIS is based on multiple measurements of dE/dx and total energy in stacks of silicon detectors, and trajectory measurements in a scintillating optical fiber trajectory (SOFT) hodoscope. The instrument has a geometrical factor of similar or equal to r250 cm(2) sr for isotope measurements, and should accumulate similar to 5 x 10(6) stopping heavy nuclei (Z > 2) in two years of data collection under solar minimum conditions.
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收藏
页码：285 / 356
页数：72
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