Electric heating – Metal heating – By arc
Patent
1975-06-19
1978-08-29
Truhe, J. V.
Electric heating
Metal heating
By arc
176 3, G21B 100
Patent
active
041105958
ABSTRACT:
An array of adjacent wave guides feed high-frequency energy into a vacuum chamber in which a toroidal plasma is confined by a magnetic field, the wave guide array being located between two toroidal current windings. Waves are excited in the wave guide at a frequency substantially equal to the lower frequency hybrid wave of the plasma and a substantially equal phase shift is provided from one guide to the next between the waves therein. For plasmas of low peripheral density gradient, the guides are excited in the TE.sub.01 mode and the output electric field is parallel to the direction of the toroidal magnetic field. For exciting waves in plasmas of high peripheral density gradient, the guides are excited in the TM.sub.01 mode and the magnetic field at the wave guide outlets is parallel to the direction of the toroidal magnetic field. The wave excited at the outlet of the wave guide array is a progressive wave propagating in the direction opposite to that of the toroidal current and is, therefore, not absorbed by so-called "runaway" electrons.
REFERENCES:
patent: 3027557 (1962-03-01), Gent
patent: 3218580 (1965-11-01), Zanichkowsky
patent: 3500422 (1970-03-01), Cheston et al.
patent: 3755760 (1973-08-01), Ohm
patent: 3778343 (1973-12-01), Coppi et al.
patent: 3801939 (1974-04-01), Lamy et al.
Brambilla Marco
Lallia Pascal
Carlson Dean E.
Erdley R. G.
Shaw Clifford C.
The United States of America as represented by the United States
Truhe J. V.
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