Time resolved imaging study of phototriggered discharges in SF/sub 6/ and Ne/SF/sub 6/ mixtures

Diffuse discharges in SF 6 and mixtures of SF 6 with H 2 , formed by nanosecond voltage pulses in non‐uniform electric field

“…Diffuse discharge in the system of blade electrodes, similarly to a volume discharge in non‐chain chemical lasers with profiled electrodes [18, 19], can cease until the generator capacity is completely discharged. In this case, a repeated breakdown of the gap in the form of a spark is possible.…”

“…However, due to the high intensity of the spark emission in the visible spectral region, the amplitude of the second spontaneous emission pulse was relatively large. Delay time of the repeated breakdown similar to [7, 8, 18, 19] is reduced with increasing SF 6 or mixtures of SF 6 with other gases pressure.…”

The influence of electric field uniformity on the discharge characters of SF6mixture

“…In recent years much attention has been paid to the development and study of repetitively pulsed non-chain HF lasers with discharge initiation. The main reactions in HF working gas have shown in to (1)(2)(3)(4). SF 6 which is often used as a donor of atomic fluorine in such HF laser has a strong electronegative property, causing the density of initial free electrons naturally exist much smaller than those exist in other lasers.…”

“…Discharge excited HF laser has been researched for many years [1][2][3][4] . In recent years much attention has been paid to the development and study of repetitively pulsed non-chain HF lasers with discharge initiation.…”

Theoretical study of the pre-ionized XeCl laser

“…Excimer lasers pumped by pre-ionized electrical discharges have been proved very efficient devices for the production of high-power UV radiation. Among the different discharge schemes, the so-called phototriggered discharge [1][2][3], which removes the high-power switch between the main storage line and the laser head, appears a simple and reliable excitation means for the development of high-power industrial UV lasers. Laser output energies of greater than 10 J were obtained in largeaperture systems using this discharge scheme [4,5].…”