The Solar Probe ANalyzers—Electrons on the Parker Solar Probe
The Solar Probe ANalyzers—Electrons on the Parker Solar Probe
复制标题
太阳探测器分析仪——帕克太阳探测器上的电子
DOI：
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发表时间：
2020
影响因子：
8.7
通讯作者：
J. Verniero
中科院分区：
文献类型：
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作者：
P. Whittlesey;D. Larson;J. Kasper;J. Halekas;Mamuda Abatcha;R. Abiad;M. Berthomier;A. Case;Jianxin Chen;D. Curtis;G. Dalton;K. Klein;K. Korreck;R. Livi;M. Ludlam;M. Marckwordt;A. Rahmati;M. Robinson;A. Slagle;M. Stevens;C. Tiu;J. Verniero
自太空时代初期以来，不同设计的静电分析仪就已投入使用，最早可追溯到1962年“水手2号”在前往金星途中进行的最早的太阳风测量。“帕克太阳探测器”（PSP）任务是美国国家航空航天局（NASA）首个专门研究日球层最内层区域的任务，它使用一套名为“太阳风电子、阿尔法粒子和质子”（SWEAP）的仪器进行热等离子体测量。SWEAP的电子PSP分析仪（太阳探测器分析仪 - 电子（SPAN - E））是PSP上的一对顶帽式静电分析仪，能够测量2电子伏特到30千电子伏特的太阳风中的电子分布函数。SPAN - E首次提供的热电子原位测量将有助于揭示在加速和加热点驱动太阳风演化的加热和加速机制，其距离太阳比以往任何时候都更近。本文详细介绍了SPAN - E传感器的设计及其在PSP与太阳的前两次近距离接触中的操作、数据格式和测量注意事项。
Electrostatic analyzers of different designs have been used since the earliest days of the space age, beginning with the very earliest solar-wind measurements made by Mariner 2 en route to Venus in 1962. The Parker Solar Probe (PSP) mission, NASA’s first dedicated mission to study the innermost reaches of the heliosphere, makes its thermal plasma measurements using a suite of instruments called the Solar Wind Electrons, Alphas, and Protons (SWEAP) investigation. SWEAP’s electron PSP Analyzer (Solar Probe ANalyzer-Electron (SPAN-E)) instruments are a pair of top-hat electrostatic analyzers on PSP that are capable of measuring the electron distribution function in the solar wind from 2 eV to 30 keV. For the first time, in situ measurements of thermal electrons provided by SPAN-E will help reveal the heating and acceleration mechanisms driving the evolution of the solar wind at the points of acceleration and heating, closer than ever before to the Sun. This paper details the design of the SPAN-E sensors and their operation, data formats, and measurement caveats from PSP’s first two close encounters with the Sun.