Spectroscopic study using line ratios of highly ionized Ti in a laser-produced plasma

Spectra of highly ionized titanium (Ti XIII through Ti XXI) in the extreme ultraviolet (XUV) region were observed in laser-produced plasmas using the OMEGA 24 beam (351 nm) laser system at the University of Rochester. The spectra were obtained using glass microballoon targets coated with a layer of Ti and a layer of parylene (CH). Time-integrated electron temperatures and densities were obtained by comparing line intensity ratios of various charge states of Ti to numerical calculations from a collisional-radiative model. The variation of line intensities with electron density and temperature is investigated. Stark width measurements of C VI were also utilized as an electron density diagnostic. The electron density was found to be approximately 1 x 1021 cm-3 while the electron temperature depended on the charge state and the CH thickness