Investigations on femtosecond-pulse-driven soft X-ray lasers using a gas puff target irradiated with a Ti:Sapphire laser H. Fiedorowicz, A. Bartnik, M. Szczurek, T. Mocek, H. J. Shin, Y. H. Cha, D. G. Lee, K. H. Hong et C. H. NamJ. Phys. IV France, 11 PR2 (2001) Pr2-197-Pr2-200DOI: https://doi.org/10.1051/jp4:2001237