JAXA Repository / AIREX 未来へ続く、宙(そら)への英知
Other TitlePerformance evaluation of the grating used in the extreme ultraviolet spectroscope (EXCEED) on the HISAKI satellite
Author(jpn)疋田, 伶奈; 吉岡, 和夫; 村上, 豪; 桑原, 正輝; 吉川, 一朗
Author(eng)Hikida, Reina; Yoshioka, Kazuo; Murakami, Go; Kuwabara, Masaki; Yoshikawa, Ichiro
Author Affiliation(jpn)東京大学; 東京大学; 宇宙航空研究開発機構宇宙科学研究所太陽系科学研究系(JAXA)(ISAS); 東京大学; 東京大学
Author Affiliation(eng)The University of Tokyo; The University of Tokyo; Department of Solar System Sciences, Institute of Space and Astronautical, Japan Aerospace Exploration Agency (JAXA)(ISAS); The University of Tokyo; The University of Tokyo
Issue Date2017-02-01
Japan Aerospace Exploration Agency (JAXA)
Publication title宇宙航空研究開発機構研究開発報告
JAXA Research and Development Report
Start page1
End page10
Publication date2017-02-01
AbstractEXCEED (EXtreme ultraviolet spectrosCope for ExosphEric Dynamics)は, ひさき衛星に搭載され, 地球周回軌道から惑星大気の観測を行っている極端紫外分光撮像装置である. EXCEEDに用いられているラミナー回折格子では, 理論的には偶数次の回折光が生じないことが知られている. しかし, EXCEEDの観測データによると, 二次光の混入が確認されている. そこで我々は, 観測データを用いた解析と, EXCEEDに搭載された回折格子とほぼ同じ仕様の回折格子(QM: qualification model)を用いた実験によって, 一次光と二次光の回折効率の比を評価した. その結果, 一次回折効率に対する二次回折効率の比は, EXCEEDに搭載された回折格子(FM: flight model)に波長58. 4nm, 68. 0nmの光を入射した場合はともに14%程度であり, QMに波長58. 4nm, 67. 2nm, 73. 5nmの光を入射した場合はそれぞれ42%, 28%, 22%程度であることがわかった.
EXCEED (EXtreme ultraviolet spectrosCope for ExosphEric Dynamics) observes the extreme ultraviolet radiation from planetary atmosphere on the HISAKI satellite since its launch in September 2013. The laminar-type diffraction grating is used in the instrument. For the laminar-type grating, it is known that there are no secondary diffracted lights in theory. However, the contamination of secondary lights is indicated from the data obtained by EXCEED. Therefore, the evaluation of the diffraction efficiency of the secondary lights is necessary for scientific analysis using data obtained by EXCEED. In this work, we evaluate the diffraction efficiency of the secondary lights by analyzing the spectral data obtained by EXCEED. The results are compared with the laboratory measurements by using the spare model (qualification model).
Description形態: カラー図版あり
Physical characteristics: Original contains color illustrations
KeywordsGrating; Secondary Light; Extreme Ultraviolet; EXCEED
Document TypeTechnical Report
JAXA Category研究開発報告
NASA Subject CategoryLunar and Planetary Science and Exploration
Report NoJAXA-RR-16-012

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