The toroidal theta pinch in M-and-S configuration
- 1 December 1964
- journal article
- Published by IOP Publishing in Nuclear Fusion
- Vol. 4 (4) , 335-343
- https://doi.org/10.1088/0029-5515/4/4/011
Abstract
For certain toroidal closed surfaces (M-and-S surfaces) of a β = 1 plasma without resultant azimuthal currents, theory predicts equilibrium. We have produced a toroidal plasma by means of a toroidal theta pinch discharge (Bmax = 10 kG, frequency of main discharge, 30 kHz). By adding periodic, additional windings we corrugate the azimuthal field and thus approach M-and-S surfaces. Smear-camera and image-converter investigations of discharges in helium and hydrogen show that in approaching the theoretical surface we approximate equilibrium. This could be observed over time intervals more than three times as long as the drift time in a purely azimuthal field under otherwise identical conditions. The electron densities are in the range of 1015 to 1017 cm−3, the temperature 5 to 10 eV and beta (β) between 0.1 and 1.Keywords
This publication has 4 references indexed in Scilit:
- Experimental Results of a Bumpy Torus DischargePhysical Review Letters, 1963
- Investigation of Plasma Confinement in a Toroidal Theta-Pinch with-Like ConfigurationsPhysical Review Letters, 1963
- Bumpy TorusPhysical Review Letters, 1960
- Torusartige Plasmakonfigurationen ohne Gesamtstrom durch ihren Querschnitt im Gleichgewicht mit einem MagnetfeldZeitschrift für Naturforschung A, 1958