DETAILED COMPARISON OF EXPERIMENTAL AND THEORETICAL HELIUM-LIKE TI AND CA SATELLITE LINE SPECTRA EMITTED FROM A LASER-PRODUCED PLASMA

Time- and space-integrated x-ray spectra of heliumlike titanium (Ti XX I) and heliumlike calcium (Ca XIX), resonance, and satellite lines emi tted from a laser-produced plasma during a study of Li-like x-ray lasi ng have been observed with a LiF (2d=4.027 Angstrom) crystal spectrome ter and compared to model calculations of the spectra. We show that th e emission can be accurately calculated for critical and subcritical d ensity laser-produced plasmas assuming coronal equilibrium and that pu blished atomic data for these satellite lines produce good agreement w ith the observed spectra. The He-like Ca and Ti intercombination to jk l Li-like satellites intensity ratios are proposed as useful and accur ate diagnostics of electron temperatures in laser-produced plasmas for temperatures above 0.5 keV.