Relative abundances of heavy ions measured by the CREAM-II Silicon Charge Detector
msra(2008)
摘要
The Cosmic Ray Energetics And Mass (CREAM) is a balloon-borne experiment for mea- suring high energy cosmic rays with energy up to 10 15 eV. CREAM incorporates a sampling tungsten/scintillating-fiber calorimeter for energy measurements and a dual-layer Silicon Charge Detector (SCD) and Timing-based Charge Detector (TCD) to measure the charge of incident par- ticles. CREAM has had two successful flights in 2004/5 and 2005/6, with a combined duration of 70 days of data. Preliminary results on the relative abundances of heavy ions measured by the SCD will be presented.
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关键词
high energy cosmic rays,experience design,relative abundance
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