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title異なる電子遷移スペクトルから求めた衝撃波背後の窒素分子の緩和現象
Other TitleRelaxation process of molecular nitrogen behind a shock wave derived from different electronic transition spectra
Author(jpn)山田, 剛治; 高柳, 大樹; 鈴木, 俊之; 藤田, 和央
Author(eng)Yamada, Gouji; Takayanagi, Hiroki; Suzuki, Toshiyuki; Fujita, Kazuhisa
Author Affiliation(jpn)東京大学; 宇宙航空研究開発機構; 宇宙航空研究開発機構研究開発本部; 宇宙航空研究開発機構研究開発本部
Author Affiliation(eng)University of Tokyo; Japan Aerospace Exploration Agency (JAXA); Aerospace Research and Development Directorate, Japan Aerospace Exploration Agency (JAXA)(ARD); Aerospace Research and Development Directorate, Japan Aerospace Exploration Agency (JAXA)(ARD)
Issue Date2009-12
PublisherInstitute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA)
宇宙航空研究開発機構宇宙科学研究本部
Publication titleSymposium on Flight Mechanics and Astrodynamics
宇宙航行の力学シンポジウム
Volume平成20年度
Publication date2009-12
Languagejpn
eng
AbstractTo investigate the influence of electronic state on the relaxation process of nitrogen molecule behind a shock wave, spectroscopic measurement is conducted using a free-piston double diaphragm shock tube. The shock velocity and the spectrum position from the shock front are determined by the double laser schliren measurement system which is newly developed for precise measurement. Emission spectra of N2(1+) and N2(2+) are obtained by means of the time resolved imaging spectroscopy. Rovibrational temperatures are derived from N2(1+) and N2(2+) and finally temperatures distributions correleated to the shock front are obtained. The measured rotational temperature of N2(2+) is lower than that of N2(2+) and N2(+)(1-). The rotational relaxation of N2(2+) looks slower than that of N2(l+) and N2(+)(1-). In contrast, the measured vibrational temperatures are close to each other and agree well with the prediction of the two-temperature model.
DescriptionMeeting Information: Symposium on Flight Mechanics and Astrodynamics 2008 (December 4-5, 2008. Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA)), Sagamihara, Kanagawa Japan
会議情報: 宇宙航行の力学シンポジウム(平成20年度)(2008年12月4~5日、宇宙航空研究開発機構宇宙科学研究本部)
KeywordsReentry; Shock tube; Nonequilibriuum thermochemistry; spectroscopy
Document TypeConference Paper
JAXA Categoryシンポジウム・研究会
SHI-NOAA0064729024
URIhttps://repository.exst.jaxa.jp/dspace/handle/a-is/14479


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