A. Sasaki et al., CALCULATION OF ATOMIC EXCITATION PROCESSES OF X-RAY LASER PLASMAS IRRADIATED BY SHORT-PULSE INTENSE KRF LASER-PULSES, Laser and particle beams, 11(1), 1993, pp. 25-30
An atomic model of the laser-produced Al plasma has been developed and
used to analyze excitation processes of recombination pumping soft X-
ray lasers. A soft X-ray gain for H-like Balmer-alpha line and He-like
3d-2p transition in short-pulse intense KrF laser (I(L) = 10(14)-10(1
5) W/cm2, tau = 10-100 ps)-produced Al plasmas are calculated for vari
ous laser temporal pulse shapes to find the condition for efficient pr
oduction of population inversion. Results from different models are co
mpared and requirements for the atomic model for X-ray laser design ar
e discussed.