The Relation between Spatial Distribution of Metastable Xe I and Increase in Thrust Force of Microwave Discharge Ion Engine μ10

• 月崎 竜童

  東京大学大学院工学系研究科航空宇宙工学専攻

• 小泉 宏之

  東京大学大学院工学系研究科航空宇宙工学専攻

• 嶋村 耕平

  東京大学大学院新領域創成科学研究科先端エネルギー工学専攻

• 西山 和孝

  宇宙航空研究開発機構宇宙科学研究所

• 國中 均

  宇宙航空研究開発機構宇宙科学研究所

Bibliographic Information

Other Title

• マイクロ波放電式イオンエンジンμ10の推力増強と準安定中性粒子の空間密度分布との関係
• マイクロハ ホウデンシキ イオンエンジンm10 ノ スイリョク ゾウキョウ ト ジュンアンテイ チュウセイ リュウシ ノ クウカン ミツド ブンプ ト ノ カンケイ
• The Relation between Spatial Distribution of Metastable Xe I and Increase in Thrust Force of Microwave Discharge Ion Engine ^|^#956;10

Abstract

The microwave discharge ion engine μ10's thrust force was improved by additional propellant inlets to a discharge chamber. However, internal plasma diagnostics was not carried out while ion beam was extracted. In order to understand the effects of the new propellant inlets, we measured excitation temperatures and axial number density distributions of metastable Xe I 5p⁵(²P⁰_3/2)6s[³/₂]⁰₂ inside of μ10 by a line pair method and laser absorption spectroscopy respectively. Firstly, the measurement of excitation temperatures was operated in two positions of the probe tip: 0cm and 5cm from a screen grid. This measurement confirmed that the temperatures marked between 0.42 and 0.68eV. Secondly, the number density distribution measurements were realized by a novel laser absorption spectroscopy utilizing optical fibers. As a result, 10¹⁷m^-3 order of metastable neutral particles were measured by coupling with the excitation temperatures. Consequently, this paper will reveal that the propellant injection from a waveguide inlet increased the electron number density in the waveguide, which disturbed a propagation of microwave to the discharge chamber. It will also reveal that the propellant injection from the discharge chamber was effective to suppress the plasma production in the waveguide, which resulted in the increase of the thrust.

Journal

• JOURNAL OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES

  JOURNAL OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES 60 (3), 135-141, 2012

  THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES

Keywords

• Microwave
• Ion Engine
• Laser Absorption Spectroscopy
• Xe I
• 823.16nm

Details

• CRID: 1390282679446250112
• NII Article ID: 130001917611
• NII Book ID: AA11307372
• DOI: 10.2322/jjsass.60.135
• ISSN: 24323691
• ISSN: 13446460
• NDL BIB ID: 023824794
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I023824794
• Web Site: https://www.jstage.jst.go.jp/article/jjsass/60/3/60_60_135/_pdf
• Text Lang: ja
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed