Numéro
J. Phys. Colloques
Volume 48, Numéro C9, Décembre 1987
X-Ray and Inner-Shell Processes
Vol. 1
Page(s) C9-359 - C9-362
DOI https://doi.org/10.1051/jphyscol:1987962
X-Ray and Inner-Shell Processes
Vol. 1

J. Phys. Colloques 48 (1987) C9-359-C9-362

DOI: 10.1051/jphyscol:1987962

RECENT ADVANCES IN SOFT X-RAY LASER EXPERIMENTS USING GERMANIUM AND COPPER PLASMAS

R.C. ELTON, T.N. LEE and E.A. McLEAN

U.S. Naval Research Laboratory, Washington, DC 20375-5000, U.S.A.


Abstract
Soft x-ray gain coefficients of 1.7-4.1 cm-1 are measured on eight lines in the wavelength range of 196 to 286 Å using 3p-3s transitions in neon-like Cu19+ and Ge22+ ions. The lasant plasma is created by a high-power laser line-focused onto thin-foi1 and solid-slab targets. Measured wavelengths agree with calculations. A previously-reported anomaly in gain for a J=0 upper level is small in these experiments.