中国火星探测任务(“天文一号”)火星离子和中性粒子分析仪(MINPA):设计和地面标定

IF 2.9 3区 地球科学
LingGao Kong, AiBing Zhang, Zhen Tian, XiangZhi Zheng, WenJing Wang, Bin Liu, Peter Wurz, Daniele Piazza, Adrian Etter, Bin Su, YaYa An, JianJing Ding, WenYa Li, Yong Liu, Lei Li, YiRen Li, Xu Tan, YueQiang Sun
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引用次数: 16

摘要

中国火星探测任务(天文一号)上的火星离子和中性粒子分析仪(MINPA)的主要目标是通过测量火星附近的离子和高能中性原子(ENAs)来研究太阳风-火星相互作用。MINPA将离子和ENA测量集成到一个传感器头中,共享相同的电子盒。MINPA采用标准的环形顶帽静电分析仪(ESA)和飞行时间(TOF)单元,可以测量2.8 eV至25.9 keV的离子和50 eV至3 keV的ENAs,基本时间分辨率为4秒。高度抛光的硅单晶衬底和Al2O3薄膜涂层被用来将ENAs电离成正离子。然后,ESA和TOF可以对这些离子进行分析,以确定ENAs的能量和质量。MINPA提供360°×90°视场(FOV), 22.5°×5.4°角分辨率用于离子测量,360°×9.7°视场(FOV), 22.5°×9.7°角分辨率用于ENA测量。TOF装置将- 15kv加速高压与超薄碳膜相结合,用于离子测量中分解H+、He2+、He+、O+、O2 +和CO2 +,并用于ENA测量中分解H和O(≥16 μ组)。本文介绍了MINPA的设计原理和地面标定情况。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Mars Ion and Neutral Particle Analyzer (MINPA) for Chinese Mars Exploration Mission (Tianwen-1): Design and ground calibration

The main objective of the Mars Ion and Neutral Particle Analyzer (MINPA) aboard the Chinese Mars Exploration Mission (Tianwen-1) is to study the solar wind–Mars interaction by measuring the ions and energetic neutral atoms (ENAs) near Mars. The MINPA integrates ion and ENA measurements into one sensor head, sharing the same electronics box. The MINPA utilizes a standard toroidal top-hat electrostatic analyzer (ESA) followed by a time of flight (TOF) unit to provide measurement of ions with energies from 2.8 eV to 25.9 keV and ENAs from 50 eV to 3 keV with a base time resolution of 4 seconds. Highly polished silicon single crystal substrates with an Al2O3 film coating are used to ionize the ENAs into positive ions. These ions can then be analyzed by the ESA and TOF, to determine the energy and masses of the ENAs. The MINPA provides a 360°×90° field of view (FOV) with 22.5°×5.4° angular resolution for ion measurement, and a 360°×9.7° FOV with 22.5°×9.7° angular resolution for ENA measurement. The TOF unit combines a –15 kV acceleration high voltage with ultra-thin carbon foils to resolve H+, He2+, He+, O+, O2 + and CO2 + for ion measurement and to resolve H and O (≥ 16 amu group) for ENA measurement. Here we present the design principle and describe our ground calibration of the MINPA.

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来源期刊
Earth and Planetary Physics
Earth and Planetary Physics GEOSCIENCES, MULTIDISCIPLINARY-
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