Rc. Mancini et al., STARK-BROADENING OF SATELLITE LINES IN SILICON PLASMAS DRIVEN BY FEMTOSECOND LASER-PULSES, Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics, 54(4), 1996, pp. 4147-4154
Silicon tar ets irradiated at large incidence angle (60 degrees) with
ultrashort (120 fs) P-polarized laser pulses at high intensities (appr
oximate to 10(16) W cm(-2)) display significantly broadened K-shell x-
ray line emission. To analyze the spectra we have calculated Stark-bro
adened line profiles for the He-alpha resonance line and its satellite
transitions in Li-, Be-, and B-like ions with spectator electrons in
the L and M shells. Results indicate that the emission is characterist
ic of near solid densities and that there is an unusually high contrib
ution from high-order satellite transitions; this could be due to a co
mbination of high-density and transient effects.