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Progress in Plasma Processing of Materials, 1999

ISBN:
1-56700-126-2 (Print)

ENERGETICAL PROPERTIES OF THE THERMO-FIELD ION-ELECTRON (I-F-T) EMISSION

Yu. L. Vasenin
E.O. Paton Electric Welding Institute, 11 Bozhenko Str., 252650 Kiev-5, GSP, Ukraine

Abstract

The paper considers peculiarities of the thermo-field (F−T) mechanism of electron emission occurring under conditions of the vacuum arc cathode spot. The problem of the effect of individual fields of ions arriving at the cathode on the side of plasma on the additional outcome of electrons as a result of local deformation of a potential barrier near the surface is formulated. Expressions were derived to determine the number and average energy of emitted electrons and results of calculation are given.