RECENT ADVANCES IN SOFT X-RAY LASER EXPERIMENTS USING GERMANIUM AND COPPER PLASMAS R. C. ELTON, T. N. LEE et E. A. McLEANJ. Phys. Colloques, 48 C9 (1987) C9-359-C9-362DOI: https://doi.org/10.1051/jphyscol:1987962