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首页> 外文期刊>Space Science Reviews >Regolith X-Ray Imaging Spectrometer (REXIS) Aboard the OSIRIS-REx Asteroid Sample Return Mission
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Regolith X-Ray Imaging Spectrometer (REXIS) Aboard the OSIRIS-REx Asteroid Sample Return Mission

机译:石油石X射线成像光谱仪(REXIS)上奥西里斯 - REX小行星样本返回任务

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摘要

The Regolith X-ray Imaging Spectrometer (REXIS) is the student collaboration experiment proposed and built by an MIT-Harvard team, launched aboard NASA's OSIRISREx asteroid sample return mission. REXIS complements the scientific investigations of other OSIRIS-REx instruments by determining the relative abundances of key elements present on the asteroid's surface by measuring the X-ray fluorescence spectrum (stimulated by the natural solar X-ray flux) over the range of energies 0.5 to 7 keV. REXIS consists of two components: a main imaging spectrometer with a coded aperture mask and a separate solar X-ray monitor to account for the Sun's variability. In addition to element abundance ratios (relative to Si) pinpointing the asteroid's most likely meteorite association, REXIS also maps elemental abundance variability across the asteroid's surface using the asteroid's rotation as well as the spacecraft's orbital motion. Image reconstruction at the highest resolution is facilitated by the coded aperture mask. Through this operation, REXIS will be the first application of X-ray coded aperture imaging to planetary surface mapping, making this student-built instrument a pathfinder toward future planetary exploration. To date, 60 students at the undergraduate and graduate levels have been involved with the REXIS project, with the hands-on experience translating to a dozen Master's and Ph.D. theses and other student publications.
机译:标度X射线成像光谱仪(REXIS)是MIT-HARVARD团队提出和建造的学生合作实验,推出了ABOARD NASA的Osirisrex小行星样本退货使命。 REXIS通过测量X射线荧光光谱(由天然太阳X射线通量)在能量0.5范围内的X射线荧光光谱(通过天然太阳X射线通量刺激)来补充其他OSIRIS-REX仪器的科学调查。 7 kev。 Rexis由两个组件组成:具有编码孔径掩模的主成像光谱仪和单独的太阳能X射线监视器,以考虑太阳的变化。除了针对小行星最有可能的陨石协会的元素丰度比(相对于Si)外,Rexis还使用小行星的旋转以及航天器的轨道运动来映射各小行星表面的元素丰富变异性。编码孔径掩模促进了最高分辨率的图像重建。通过这种操作,REXIS将是X射线编码光圈成像的第一次应用于行星表面映射,使得该学生构建的仪器成为未来行星勘探的探测器。迄今为止,本科和研究生级别的60名学生都参与了REXIS项目,随手经验转化为十几个硕士和博士。论文和其他学生出版物。

著录项

  • 来源
    《Space Science Reviews》 |2018年第1期|共26页
  • 作者单位

    Space Systems Laboratory Department of Aeronautics and Astronautics Massachusetts Institute of Technology Cambridge MA USA;

    Space Systems Laboratory Department of Aeronautics and Astronautics Massachusetts Institute of Technology Cambridge MA USA;

    Space Systems Laboratory Department of Aeronautics and Astronautics Massachusetts Institute of Technology Cambridge MA USA;

    Harvard College Observatory 60 Garden Street Cambridge MA USA;

    Harvard College Observatory 60 Garden Street Cambridge MA USA;

    Space Systems Laboratory Department of Aeronautics and Astronautics Massachusetts Institute of Technology Cambridge MA USA;

    Space Systems Laboratory Department of Aeronautics and Astronautics Massachusetts Institute of Technology Cambridge MA USA;

    Space Systems Laboratory Department of Aeronautics and Astronautics Massachusetts Institute of Technology Cambridge MA USA;

    Space Systems Laboratory Department of Aeronautics and Astronautics Massachusetts Institute of Technology Cambridge MA USA;

    Space Systems Laboratory Department of Aeronautics and Astronautics Massachusetts Institute of Technology Cambridge MA USA;

    Space Systems Laboratory Department of Aeronautics and Astronautics Massachusetts Institute of Technology Cambridge MA USA;

    Space Systems Laboratory Department of Aeronautics and Astronautics Massachusetts Institute of Technology Cambridge MA USA;

    Space Systems Laboratory Department of Aeronautics and Astronautics Massachusetts Institute of Technology Cambridge MA USA;

    MIT Kavli Institute for Astrophysics and Space Research Massachusetts Institute of Technology Cambridge MA USA;

    Space Systems Laboratory Department of Aeronautics and Astronautics Massachusetts Institute of Technology Cambridge MA USA;

    Space Systems Laboratory Department of Aeronautics and Astronautics Massachusetts Institute of Technology Cambridge MA USA;

    Space Systems Laboratory Department of Aeronautics and Astronautics Massachusetts Institute of Technology Cambridge MA USA;

    Goddard Space Flight Center Greenbelt MD USA;

    Lunar and Planetary Laboratory University of Arizona Tucson AZ USA;

    Harvard College Observatory 60 Garden Street Cambridge MA USA;

    Department of Earth Atmospheric and Planetary Sciences Massachusetts Institute of Technology Cambridge MA USA;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 航空;
  • 关键词

    Asteroids; Meteorites; Spectroscopy; OSIRIS-REx;

    机译:小行星;陨石;光谱学;Osiris-rex;

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