Published October 9, 2006
| Version v1
Journal article
Observation and explanation of the JET n=0 chirping mode
- 1. Plasma Science and Fusion Center, Massachusetts Institute of Technology, Cambridge, MA 02139 (United States)
- 2. Institute for Fusion Studies, University of Texas at Austin, Austin, TX 78712-1060 (United States)
- 3. EFDA Close Support Unit, Culham Science Centre, OX14 3DB (United Kingdom)
- 4. Centro de Fusao Nuclear Associacao Euratom-IST, Instituto Superior Tecnico, 1049001 Lisbon (Portugal)
- 5. Alfven Laboratory, KTH, Euratom-VR Association (Sweden)
- 6. Max-Planck Institute for Plasma Physics, EURATOM Association, D-85748 Garching (Germany)
- 7. Euratom-UKAEA Fusion Association, Culham Science Centre, Abingdon OX14 3DB (United Kingdom)
Description
Persistent rapid up and down frequency chirping modes with a toroidal mode number of zero (n=0) have been observed in the JET tokamak when energetic ions, with a mean energy ∼500keV, were created by high field side ion cyclotron resonance frequency heating. This heating method enables the formation of an energetically inverted ion distribution function that allows ions to spontaneously excite the observed instability, identified as a global geodesic acoustic mode. The interpretation is that phase space structures form and interact with the fluid zonal flow to produce the pronounced frequency chirping
Additional details
Identifiers
- DOI
- 10.1016/j.physleta.2006.05.030;
- PII
- S0375-9601(06)00703-1;
Publishing Information
- Journal Title
- Physics Letters. A
- Journal Volume
- 358
- Journal Issue
- 2
- Journal Page Range
- p. 154-158
- ISSN
- 0375-9601
- CODEN
- PYLAAG
INIS
- Country of Publication
- Netherlands
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 38067168
- Subject category
- S70: PLASMA PHYSICS AND FUSION TECHNOLOGY;
- Descriptors DEI
- DISTRIBUTION FUNCTIONS; ION CYCLOTRON-RESONANCE; JET TOKAMAK; PHASE SPACE; PLASMA HEATING; PLASMA INSTABILITY; TAIL IONS
- Descriptors DEC
- CHARGED PARTICLES; CLOSED PLASMA DEVICES; CYCLOTRON RESONANCE; FUNCTIONS; HEATING; INSTABILITY; IONS; MATHEMATICAL SPACE; RESONANCE; SPACE; THERMONUCLEAR DEVICES; TOKAMAK DEVICES
Optional Information
- Copyright
- Copyright (c) 2006 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.