The effect of volumetric weighting in the interaction of intense laser fields with clusters T. Döppner, J. P. Müller, A. Przystawik, J. Tiggesbäumker and K.-H. Meiwes-Broer Eur. Phys. J. D, 43 1-3 (2007) 261-266 Published online: 24 May 2007 DOI: 10.1140/epjd/e2007-00125-6