Published April 25, 2003
| Version v1
Journal article
Controlled optimization of mode conversion from electron Bernstein waves to extraordinary mode in magnetized plasma
Creators
- 1. Princeton Plasma Physics Laboratory, Princeton University, Princeton, New Jersey 08543 (United States)
- 2. Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831 (United States)
- 3. Graduate School of Frontier Sciences, University of Tokyo, Tokyo 113-0033 (Japan)
- 4. Plasma Science and Fusion Center, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139 (United States)
Description
In the CDX-U spherical torus, agreement between radiation temperature and Thomson scattering electron temperature profiles indicates ∼100% conversion of thermally emitted electron Bernstein waves to the X mode. This has been achieved by controlling the electron density scale length (Ln) in the conversion region with a local limiter outside the last closed flux surface, shortening Ln to the theoretically required value for optimal conversion. From symmetry of the conversion process, prospects for efficient coupling in heating and current drive scenarios are strongly supported
Additional details
Identifiers
Publishing Information
- Journal Title
- Physical Review Letters
- Journal Volume
- 90
- Journal Issue
- 16
- Journal Page Range
- p. 165001-165001.4
- ISSN
- 0031-9007
- CODEN
- PRLTAO
INIS
- Country of Publication
- United States
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 35041560
- Subject category
- S71: CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; S70: PLASMA PHYSICS AND FUSION TECHNOLOGY;
- Descriptors DEI
- BERNSTEIN MODE; ELECTRON DENSITY; ELECTRON TEMPERATURE; PLASMA; PLASMA DIAGNOSTICS; PLASMA WAVES; THOMSON SCATTERING; TOKAMAK DEVICES; WAVE PROPAGATION
- Descriptors DEC
- CLOSED PLASMA DEVICES; INELASTIC SCATTERING; OSCILLATION MODES; SCATTERING; THERMONUCLEAR DEVICES
Optional Information
- Notes
- (c) 2003 The American Physical Society