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Author Pickard, D. S. ♦ Kunkel, W. B. ♦ Leung, K. N. ♦ Young, A. T.
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword PLASMA PHYSICS AND FUSION ♦ PHYSICS ♦ ELECTRON SOURCES ♦ LASER-PRODUCED PLASMA ♦ PHOTOEMISSION ♦ PULSES ♦ CATHODES ♦ BARIUM ♦ LANTHANUM BORIDES ♦ NS RANGE
Abstract 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 LaB{sub 6} and 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. {copyright} {ital 1996 American Institute of Physics.}
ISSN 00346748
Educational Use Research
Learning Resource Type Article
Publisher Date 1996-04-01
Publisher Department Lawrence Berkeley National Laboratory
Publisher Place United States
Journal Review of Scientific Instruments
Volume Number 67
Issue Number 4
Organization Lawrence Berkeley National Laboratory


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