Title :
Two-dimensional observation of copper vapor in vacuum arcs by laser-induced fluorescence
Author :
Koyama, Kenichi ; Nakayama, Yasushi ; Ohi, Takeshi ; Horinouchi, Katsuhiko ; Sasao, Hiroyuki
Author_Institution :
Adv. Technol. R&D Center, Mitsubishi Electr. Corp., Hyogo, Japan
Abstract :
The density distribution and the velocity of copper neutral atoms emitted from a single cathode spot in 40 A vacuum arc were measured by the two-dimensional laser-induced fluorescence method with a CCD camera. The copper atoms spread widely over the cathode and the density of the copper atoms reached 5×1013/cm3. The velocity of copper atoms emitted from the cathode spot was about 10 km/sec
Keywords :
circuit-breaking arcs; copper; electric breakdown; fluorescence; insulation testing; laser beam effects; switchgear testing; vacuum arcs; vacuum breakdown; vacuum insulation; vacuum interrupters; 10 km/s; 40 A; CCD camera; Cu; cathode spot; density distribution; insulation breakdown tests; laser-induced fluorescence; neutral atoms velocity; two-dimensional observation; vacuum arc; Atom lasers; Atomic beams; Atomic measurements; Cathodes; Charge coupled devices; Copper; Density measurement; Fluorescence; Vacuum arcs; Velocity measurement;
Conference_Titel :
Discharges and Electrical Insulation in Vacuum, 1996. Proceedings. ISDEIV., XVIIth International Symposium on
Conference_Location :
Berkeley, CA
Print_ISBN :
0-7803-2906-6
DOI :
10.1109/DEIV.1996.545344
