用PAMELA探测近地轨道木星电子的高能成分
Detection of the high energy component of Jovian electrons in Low Earth Orbit with the PAMELA experiment
摘要：
PAMELA实验致力于研究低地球轨道上的宇宙射线，其仪器经过优化，可精确测定c. r.的银河系反物质成分。它是由许多探测器围绕一个永磁体光谱仪。PAMELA于2006年6月15日搭载俄罗斯Resurs-DK 1卫星发射升空，任务期限为三年。探测器的特点、长寿命和卫星轨道将使我们能够处理宇宙射线物理学的几个方面。在这项工作中，我们讨论的观测能力PAMELA检测电子组件以上50兆电子伏。磁谱仪允许详细测量银河系和木星起源的电子的能谱。长期测量和与地球-木星13个月会合周期的相关性将允许分离这两种贡献，并测量主要在50-70 MeV能量范围内的初级电子木星分量。利用这种技术，也将有可能研究在太阳风终端激波中，木星e-再加速到2 GeV时对电子谱的贡献。
英文摘要：
The PAMELA experiment is devoted to the study of cosmic rays in Low Earth Orbit with an apparatus optimized to perform a precise determination of the galactic antimatter component of c.r. It is constituted by a number of detectors built around a permanent magnet spectrometer. PAMELA was launched in space on June 15th 2006 on board the Russian Resurs-DK1 satellite for a mission duration of three years. The characteristics of the detectors, the long lifetime and the orbit of the satellite, will allow to address several aspects of cosmic-ray physics. In this work we discuss the observational capabilities of PAMELA to detect the electron component above 50 MeV. The magnetic spectrometer allows a detailed measurement of the energy spectrum of electrons of galactic and Jovian origin. Long term measurements and correlations with Earth-Jupiter 13 months synodic period will allow to separate these two contributions and to measure the primary electron Jovian component, dominant in the 50-70 MeV energy range. With this technique it will also be possible to study the contribution to the electron spectrum of Jovian e- reaccelerated up to 2 GeV at the Solar Wind Termination Shock.
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