2002A&A...389.1086D

Stark widths and shifts of two prominent triply ionized sulfur (S IV) ultraviolet spectral lines (309.727nm and 311.761nm) in the 4s ²S-4p ²P⁰ transition have been measured in a linear, low-pressure, pulsed arc discharge created in a SF₆ plasma at 33600K electron temperature and at 2.8x10²³m ^–3 electron density. Presented Stark shifts are the first measurement of the line shift in the S IV spectrum. Obtained broadening parameters have been compared to the available experimental and theoretical data. The transition probability ratio of the mentioned S IV spectral lines is also obtained.