Multiple ionization of atom clusters by intense soft X-rays from a free-electron laser

H. Wabnitz, L. Bittner, Alonso Castro, Ralph Döhrmann, P. Gürtler, Tim Laarmann, W. Laasch, Joachim Schulz, A. Swiderski, K. von Haeften, T. Möller, B. Faatz, Alexander Fateev, J. Feldhaus, Ch. Gerth, U. Hahn, E.L. Saldin, Evgeni Schneidmiller, K. P. Sytchev, K. Tiedtke, R. Treusch, M.V. Yurkov

Nature, 2002