@inproceedings{oai:jaxa.repo.nii.ac.jp:00020326, author = {新居見, 励 and 土山, 明 and 門野, 敏彦 and 奥平, 恭子 and 長谷川, 直 and 田端, 誠 and 中野, 司 and 上杉, 健太朗 and 竹内, 晃久 and 渡辺, 隆行 and Niimi, Rei and Tsuchiyama, Akira and Kadono, Toshihiko and Okudaira, Kyoko and Hasegawa, Sunao and Tabata, Makoto and Nakano, Tsukasa and Uesugi, Kentaro and Takeuchi, Akihisa and Watanabe, Takayuki}, book = {第43回月・惑星シンポジウム, Proceedings of the 43th ISAS Lunar and Planetary Symposium}, month = {Aug}, note = {第43回月・惑星シンポジウム (2010年8月4-6日. 宇宙航空研究開発機構宇宙科学研究所), 相模原市, 神奈川県, 43rd ISAS Lunar and Planetary Symposium (August 4-6, 2010. Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA)(ISAS)), Sagamihara, Kanagawa Japan, Projectiles of several densities were fired into 20 mg/cm(exp 3) aerogel at ca.6 km/s in order to investigate projectile density dependence of Stardust impact tracks. All the impact tracks were observed with an optical microscope (OM) and some tracks were also analyzed with x-ray CT. We found that characteristic track sizes can be measured with an OM better than an error of ca.15%. Based on our OM data, track length (L(sub t)) was almost proportional to projectile size (d(sub p)) and density (rho(sub p)) whilst maximum hole diameter (D(sub m)) apparently increased only with d(sub p). Therefore we suggest that aspect ratio of each track (L(sub t)/D(sub m)) is a reliable criterion when we estimate rho(sub p) from track shape. This is consistent with the model presented by Iida et al. (2010) Meteoritics and Planetary Science, in press., 著者人数: 14人, 形態: カラー図版あり, Number of authors: 14, Physical characteristics: Original contains color illustrations, 資料番号: AA0065116016}, 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 = {DEPENDENCE ON PROJECTILE DENSITY AND SIZE OF IMPACT TRACK MORPHOLOGY IN SILICA AEROGEL: AN EXPERIMENTAL STUDY.}, volume = {43}, year = {2010} }