Survival of the impactor during hypervelocity collisions II: An analogue for high porosity targets.OPEN ACCESS 

C. Avdellidou, M.C. Price, M. Delbo, and M.J. Cole

MNRAS doi:10.1093/mnras/stw2381
First published online September 16, 2016


“We investigated how a target’s porosity affects the outcome of a collision, with respect to the impactor’s fate. Laboratory impact experiments using peridot projectiles were performed at a speed range between 0.3 and 3.0 km/s, onto high porosity water-ice (40%) and fine-grained calcium carbonate (70%) targets. We report that the amount of implanted material in the target body increases with increasing target’s porosity, while the size frequency distribution of the projectile’s ejecta fragments becomes steeper. A supplementary Raman study showed no sign of change of the Raman spectra of the recovered olivine projectile fragments indicate minimal physical change. “