Characterization of a transient Ni-like Ag X-ray laser under two-color irradiation J. Kuba, A. Klisnick, D. Ros, G. Jamelot, P. Fourcade, J.-L. Miquel, S. Jacquemot, N. Blanchot and J.-F. Wyart J. Phys. IV France, 11 PR2 (2001) Pr2-35-Pr2-38 DOI: 10.1051/jp4:2001205