Mechanisms for the formation and transport of ion fluxes in the plasma of a high-current vacuum spark

The processes of ion flux formation in the plasma of a high-current vacuum spark were investigated experimentally. It is shown that multicharged ions are generated in the neck formed in the erosion products of the inner electrode. The plasma escaping from the neck region plays a role of a piston dra...

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Bibliographic Details
Published in:Plasma physics reports 2010-09, Vol.36 (9), p.772-778
Main Authors: Dolgov, A. N., Zemchenkova, N. V., Klyachin, N. A., Prokhorovich, D. E.
Format: Article
Language:English
Subjects:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
Atomic
CHARGED PARTICLES
CHARGED-PARTICLE TRANSPORT
ELECTRODES
EROSION
EVAPORATION
HEATING
IONS
Molecular
MULTICHARGED IONS
Optical and Plasma Physics
PHASE TRANSFORMATIONS
Physics
Physics and Astronomy
PINCH EFFECT
PLASMA
Plasma Electronics
PLASMA HEATING
RADIATION TRANSPORT
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Summary:The processes of ion flux formation in the plasma of a high-current vacuum spark were investigated experimentally. It is shown that multicharged ions are generated in the neck formed in the erosion products of the inner electrode. The plasma escaping from the neck region plays a role of a piston dragging particles of the cold peripheral plasma into ambient space. As the discharge current increases, the flux of the evaporated electrode material grows, the degree of ionization of the plasma produced decreases, and the efficiency of plasma heating caused by the pinching effect is reduced.
ISSN:1063-780X
1562-6938
DOI:10.1134/S1063780X10090035