The electron spectrum above 20 GeV measured by ATIC-2
The electron spectrum above 20 GeV measured by ATIC-2
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发表时间：
2005
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通讯作者：
J. Chang;W. Schmidt;J. Adams;H. Ahn;G. Bashindzhagyan;K. Batkov;M. Christl;A. Fazely;O. Ganel;R. Gunasingha;T. G. Guzik;J. Isbert;K. C. Kim;E. Kouznetsov;M. Panasyuk;A. Panov;E. Seo;N. V. Sokolskaya;J. Z. Wang;J. Wefel;J. Wu;V. Zatsepin
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作者：
J. Chang;W. Schmidt;J. Adams;H. Ahn;G. Bashindzhagyan;K. Batkov;M. Christl;A. Fazely;O. Ganel;R. Gunasingha;T. G. Guzik;J. Isbert;K. C. Kim;E. Kouznetsov;M. Panasyuk;A. Panov;E. Seo;N. V. Sokolskaya;J. Z. Wang;J. Wefel;J. Wu;V. Zatsepin
先进的薄电离量热计(ATIC)气球实验已于2000-01年(试飞)和2002-03年(科学飞行)在南极洲麦克默多飞行。ATIC由一个跟随碳靶的分段式BGO量热计和入口处的硅基探测器组成，其中碳靶带有闪烁体跟踪层。ATIC测量原子核和电子的组成和能谱。我们给出了ATIC-2科学飞行的电子能谱，从20GeV到1.5TeV，并与现有的乳胶室非常高的能量测量结果和星系传播计算的结果进行了比较。ATIC数据中良好的能量分辨率和高统计量允许对结果进行详细的天体物理解释。
The Advanced Thin Ionization Calorimeter (ATIC) Balloon Experiment has been flown from McMurdo, Antarctica in 2000-01 (test flight) and 2002-03 (science flight). ATIC is composed of a segmented BGO calorimeter following a carbon target with scintillator tracking layers and a Silicon matrix detector at the entrance. ATIC measures the composition and energy spectra of the nuclei plus electrons. We present the electron spectrum derived from the ATIC-2 science flight, from 20 GeV to 1.5 TeV, and compare it to existing very high energy measurements from emulsion chambers and to the results of galactic propagation calculations. The good energy resolution and high statistics in the ATIC data allow detailed astrophysical interpretation of the results.