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High-Resolution Spectroscopy of the Hayabusa Reentry Using a Fabry-Perot Interferometer

机译：法布里-珀罗干涉仪对Hay鸟折返的高分辨率光谱学

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摘要

Spectroscopic observations of the Hayabusa reentry are presented as obtained by an instrument combining Fabry-Perot interferometry and classical optical emission spectroscopy. The instrument was deployed onboard NASA's DC-8 airborne laboratory as part of the Hayabusa Reentry Airborne Observation Campaign led by NASA, in close collaboration with Japan Aerospace Exploration Agency. The covered wavelength range in the low-resolution mode is from 738.4 to 852.1 mil with the aim to acquire simultaneously the neutral atomic oxygen triplets at 777 and 844 nm and the nitrogen lines at746 and 821 nm. The high-resolution mode reaches a wavelength resolution of △λ = 0.01 nm. The intention of this instrument was to measure the translational temperature of the neutral atoms in the plasma flow ahead of the Hayabusa capsule. Air plasma emissions were detected at high resolution, but not at high enough signal to noise to measure the linewidth with sufficient accuracy. As expected, the measurements demonstrate the absence of significant pressure broadening in the lines compared with plasma wind-tunnel conditions.
机译：ab鸟折返的光谱观察结果是通过结合Fabry-Perot干涉测量法和经典光发射光谱法的仪器获得的。该仪器被部署在NASA的DC-8机载实验室上，这是由NASA领导的Hayabusa Reentry机载观测运动的一部分，与日本航空航天局密切合作。低分辨率模式下的覆盖波长范围是738.4至852.1 mil，目的是同时获取777和844 nm的中性原子氧三重态以及746和821 nm的氮线。高分辨率模式的波长分辨率为△λ= 0.01 nm。该仪器的目的是测量Hayabusa胶囊之前的等离子流中中性原子的翻译温度。在高分辨率下检测到了空气等离子体发射，但没有足够高的信噪比以足够的精度测量线宽。如所预期的，测量结果表明与等离子风洞条件相比，管线中没有明显的压力展宽。

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  • 来源
    《Journal of Spacecraft and Rockets》 |2014年第6期|1986-1993|共8页
  • 作者

    Stefan Loehle; Peter Jenniskens;

  • 作者单位

    Universitaet Stuttgart, 70569 Stuttgart, Germany;

    Search for Extraterrestrial Intelligence Institute, Mountain View, California 94043;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
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