Probing the underlying physics of ejecta production from shocked Sn samples

This effort investigates the underlying physics of ejecta production for high explosive (HE) shocked Sn surfaces prepared with finishes typical to those roughened by tool marks left from machining processes. To investigate the physical mechanisms of ejecta production, we compiled and re-examined ejecta data from two experimental campaigns [W. S. Vogan , J. Appl. Phys. 98, 113508 (1998); M. B. Zellner , ibid. 102, 013522 (2007)] to form a self-consistent data set spanning a large parameter space. In the first campaign, ejecta created upon shock release at the back side of HE shocked Sn samples were characterized for samples with varying surface finishes but at similar shock-breakout pressures P-SB. In the second campaign, ejecta were characterized for HE shocked Sn samples with a constant surface finish but at varying P-SB. (C) 2008 American Institute of Physics.