Spall fracture of copper under loading by shock waves with duration less 1 microsecond V.I. Skokov, O.N. Ignatova, A.N. Malyshev, A.M. Podurets, V.A. Raevsky, M.I. Tkachenko and M.A. Zocher EPJ Web of Conferences, 10 (2010) 00019 Published online: 19 January 2011 DOI: 10.1051/epjconf/20101000019