Plasma production via laser‐induced photoemission (abstract)
作者:
D. S. Pickard,
W. B. Kunkel,
K. N. Leung,
A. T. Young,
期刊:
Review of Scientific Instruments
(AIP Available online 1996)
卷期:
Volume 67,
issue 3
页码: 1340-1340
ISSN:0034-6748
年代: 1996
DOI:10.1063/1.1147244
出版商: AIP
数据来源: AIP
摘要:
The feasibility of laser‐induced photoemission as a driving mechanism for short plasma pulse production is currently being investigated with a pulsed excimer laser at 248 nm. Low work function materials such as LaB6and barium are used as cathode materials and the resulting plasma characteristics are being examined. Results from early measurements of the barium photocathode show a strong dependence of the photoemitted current on the source pressure and cathode voltage. Additionally, the temporal behavior of the emitted electron pulse is found to consist of two components: a short 50 ns burst corresponding to laser‐induced photoemission, and a larger, longer 100 ns pulse increasing from the tail end of the photoemitted electron pulse. ©1996 American Institute of Physics.
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