Measurements of post shock temperature of ice surface cratered by high velocity impacts

Arakawa, Masahiko*; Yasui, Minami

We conducted impact experiments of water ice and measured a post shock temperature of impact crater using an infrared video camera. The surface temperature in a crater showed a peak temperature just after the impact then it cooled down gradually with time. The decay time of maximum temperature might depend on a scale of heated volume in a crater, so we estimated the ratio of thermal energy to projectile kinetic energy. As a result, we found that up to 10% of the projectile kinetic energy was partitioned into the post shock heating of the impact crater.