Title :
Time resolved imaging study of phototriggered discharges in SF6 and Ne/SF6 mixtures
Author :
Makarov, M. ; Mènager, L. ; Pasquiers, S. ; Postel, C. ; Puech, V.
Author_Institution :
SOPRA, Bois Colombes, France
fDate :
2/1/1999 12:00:00 AM
Abstract :
The spatial dynamic of phototriggered discharges in SF6 and Ne/SF6 mixtures has been studied through gated intensified charge-coupled device camera measurements correlated to current and voltage measurements. Physical mechanisms involved in discharge instabilities, which limit performance of discharge pumped HF/DF lasers using H2 or D2, are under investigation. It Is shown that the high cathodic emission intensity and the discharge bulk glow are separated by a pronounced dark space. Arcs develop at a time which depends upon parameters such as the SF6 pressure and the current pulse duration
Keywords :
discharges (electric); gas mixtures; neon; plasma diagnostics; plasma instability; sulphur compounds; D2; DF; H2; HF; Ne-SF6; Ne-SF6 mixtures; SF6; SF6 pressure; arc development; cathodic emission intensity; current measurements; current pulse duration; dark space; discharge bulk glow; discharge instabilities; discharge pumped HF/DF lasers; gated intensified charge-coupled device camera measurements; phototriggered discharges; pulsed X-rays; spatial dynamic; time resolved imaging; voltage measurements; Cameras; Chemical lasers; Current measurement; Electrodes; Hafnium; Image resolution; Laser excitation; Plasma measurements; Pump lasers; Voltage;
Journal_Title :
Plasma Science, IEEE Transactions on
