Electric lamp and discharge devices – Fluent material supply or flow directing means – Plasma
Patent
1994-09-06
1996-11-19
O'Shea, Sandra L.
Electric lamp and discharge devices
Fluent material supply or flow directing means
Plasma
3133611, 3133621, 250398, 315505, H05H 900
Patent
active
055765939
ABSTRACT:
In an apparatus for accelerating electrically charged particles from a pulsed plasma reservoir of high particle density in a dielectric tubular chamber which extends from the reservoir and is surrounded by at least two electrodes of which one is disposed at the wall of the reservoir, the dielectric tubular chamber is partially evacuated to a sufficiently low pressure p such that the product of the gas pressure p and the inner diameter d of the tubular chamber is low enough to avoid parasitic discharges in the residual gas charge, and a voltage is applied to the electrodes such that the particles are drawn into the dielectric tubular chamber with high flow density and are accelerated therein thereby forming a charged particle beam whereby the residual gas charge in the dielectric tubular chamber is ionized along the inside wall of the tubular chamber and polarized such that the wall of the dielectric tubular chamber becomes repulsive for the charged particle beam and its axis becomes attractive whereby the charged particle beam is electrostatically focussed and exits the dielectric tubular chamber with log losses.
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patent: 3864640 (1975-02-01), Bennett
patent: 4020384 (1977-04-01), Richards
patent: 4128764 (1978-12-01), Luce
patent: 4363774 (1982-12-01), Bennett
patent: 4748378 (1988-05-01), Frost et al.
patent: 4912421 (1990-03-01), Anderson
Nuclear Instruments & Methods in Physics Research, vol. A278 No. 1, May 15, 1989, Amsterdam pp. 206-212.
Nuclear Instruments & Methods, vol. 205, No. 1-2, Jan. 15, 1983 Amsterdam pp. 173-184.
Konijnenberg Martin
Schultheiss Christoph
Schwall Markus
Bach Klaus J.
Esserman Matthew J.
Kernforschungszentrum Karlsruhe GmbH
O'Shea Sandra L.
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