Physics
Scientific paper
Dec 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011agufm.p43a1659k&link_type=abstract
American Geophysical Union, Fall Meeting 2011, abstract #P43A-1659
Physics
[6015] Planetary Sciences: Comets And Small Bodies / Dust, [6022] Planetary Sciences: Comets And Small Bodies / Impact Phenomena
Scientific paper
A large number of cometary dust particles were captured with low-density silica aerogels in NASA Stardust Mission. The dust particles penetrate into the aerogels and form various track shapes. In order to derive quantitative properties of the dust particles from the morphology of the tracks, we should understand the penetration mechanism and construct track formation models, which connect the impact conditions and the track shapes. It is essential to experimentally observe the track formation process to construct the models. A large number of experiments of penetration into low-density media have been carried out, but there are a few studies on the in-situ observation of penetration process. In this study, we report the results of the observation of the penetration process using a high-speed camera for various types of projectiles. Various projectiles made different track shapes. We analyze the track growth of both projectile penetration depth and diameter.
Hasegawa Satoshi
Kadono Toshihiko
Niimi Rei
Okudaira Kiyoaki
Tabata Makoto
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