Surface-Spark Discharges Compared with Exploding Wires/Films as High Temperature UV Sources
LOS ALAMOS NATIONAL LAB NM
Pagination or Media Count:
Extensive experimental studies of electrically exploded 0. 05- to 0. 25-mm diameter metal wires and film thicknesses from 0.1 to 10 microm coated on 0.6- to 10. 0-cm diameter substrates were made for lengths from 3.0 to 100 em. These exploded metal-conductor initiated discharges proved to be excellent sources for intense radiation in the near-ultraviolet range, 200 to 300 nm, with brightness temperatures measured over 40,000 K. The impedance-matching characteristics and scaling laws developed through these studies will be presented and used as a basis to compare more recent results on surface-spark discharges. These latter discharges do not appear to be as nearly blackbody as the conductor-initiated discharges, but through selected insulator surfaces, intense emission in the spectral range of interest can be obtained.
- Electricity and Magnetism