Abstract

The stable self-sustained glow discharge in S₂ vapor was obtained at the sulfur vapor temperature of 180–250°C in a transverse discharge quartz cell with UV preionization. The emission spectra of pure S₂ is from 293.3 nm to 510.4 nm at the temperature of 230°C. Under the same condition the range of emission spectra changed to 350-520 nm when 2 Torr He buffer gas was added. This shows that the relaxation of $B^3{\Sigma }_u^{-}$ accrued from He buffer collision. We observed the phenomena of S₂ emission spectra due to S₂–S₂ collision and self quenching when the S₂ vapor temperature was higher than 250°C. The double-Blumlein circuit we used produced a pulse rise time of 7 ns and pulse duration of 10 ns.

© 1992 Optical Society of America