@inproceedings{oai:jaxa.repo.nii.ac.jp:00020303, author = {黒澤, 耕介 and 大野, 宗祐 and 杉田, 精司 and 三重野, 哲 and 松井, 孝典 and Kurosawa, Kosuke and Ono, Sosuke and Sugita, Seiji and Mieno, Tetsu and Matsui, Takafumi and Hasegawa, S.}, book = {Proceedings of the 44th ISAS Lunar and Planetary Symposium}, month = {}, note = {44th ISAS Lunar and Planetary Symposium (August 1-3, 2011. Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA)(ISAS)), Sagamihara, Kanagawa Japan, A new experimental technique for gas phase chemical analysis in an open system using a two-stage light gas gun was developed. We avoid the chemical contamination from the acceleration gas with a chemically inert gas used as the wall against to the contaminant gas. As a first step, the technique was applied to shock devolatilization experiments using natural calcite samples (CaCO3) to investigate the effect of impact velocity on the impact-induced CO2 amount. We successfully obtained high-speed images, emission spectra, and the relative amount of impact-induced CO2 simultaneously. The CO2 amount at 6.7 km/s was 5.9 times than that at 4.2 km/s. This result strongly suggests that the decarbonation efficiency also depends on impact velocity. The technique developed in this study is likely to be useful for the quantitative measurements of the amount of impact-induced vapor and its chemical composition., 形態: カラー図版あり, 形態: CD-ROM1枚, Physical characteristics: Original contains color illustrations, Note: One CD-ROM, 資料番号: AA0065390018}, publisher = {宇宙航空研究開発機構宇宙科学研究所 (JAXA)(ISAS), Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA)(ISAS)}, title = {Shock-induced devolatilization in an open system using a two-stage light gas gun}, volume = {44}, year = {2011} }