Plasma heating above the lower hybrid frequency by linear wave absorption

Journal Article · Mon Sep 01 04:00:00 EDT 1975 · Phys. Fluids, v. 18, no. 9, pp. 1178-1182

DOI:https://doi.org/10.1063/1.861280· OSTI ID:4194639

Schuss, J J

The possibility of heating collisionless toroidal plasmas to high temperatures by means of linear wave absorption above the lower hybrid frequency is discussed. This absorption is mainly due to electron Landau damping and ion damping is neglected. Two methods of heating are considered, propagating a wave across the plasma column and exciting toroidal modes. WKB solutions of the first method show that the incident wave must be within a narrow range of k/subz/ for its energy to be uniformly deposited into the plasma. Toroidal mode solutions indicate that this band of k/subz/ may be significantly widened by lower k/subz/ waves which drive slightly damped toroidal modes. The conditions on k/subz/ for accessibility and heating are calculated and the advantages of such an approach are discussed.

• Research Organization: Plasma Physics Laboratory, Princeton University, Princeton, New Jersey 08540
• Sponsoring Organization: USDOE
• NSA Number: NSA-33-000188
• OSTI ID: 4194639
• Journal Information: Phys. Fluids, v. 18, no. 9, pp. 1178-1182, Journal Name: Phys. Fluids, v. 18, no. 9, pp. 1178-1182; ISSN PFLDA
• Country of Publication: United States
• Language: English

Related Subjects

*PLASMA HEATING-- HYBRID RESONANCE
700101* --Fusion Energy--Plasma Research--Plasma Confinement & Heating
ABSORPTION
COLLISIONLESS PLASMA
ELECTROMAGNETIC RADIATION
N70100* --Physics--Controlled Thermonuclear Research-- Confinement & Heating
TOROIDAL CONFIGURATION
WAVE PROPAGATION