Absolute X-ray yields from laser-irradiated, Ge-doped aerogel targets K.B. Fournier, M. Tobin, J.F. Poco, K. Bradley, S.B. Hansen, C.A. Coverdale, D. Beutler, M. Severson, E.A. Smith and D.L. Reeder J. Phys. IV France, 133 (2006) 449-451 Published online: 16 June 2006 DOI: 10.1051/jp4:2006133092