Published May 7, 2010
| Version v1
Journal article
Observation of Confined Current Ribbon in JET Plasmas
Creators
- 1. Laboratorio Nacional de Fusion, Asociacion EURATOM-CIEMAT, 28040, Madrid (Spain)
- 2. Euratom/CCFE Association, Culham Science Centre, Abingdon, Oxon, OX14 3DB (United Kingdom)
- 3. Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031 (China)
Description
We report the identification of a localized current structure inside the JET plasma. It is a field-aligned closed helical ribbon, carrying current in the same direction as the background current profile (cocurrent), rotating toroidally with the ion velocity (corotating). It appears to be located at a flat spot in the plasma pressure profile, at the top of the pedestal. The structure appears spontaneously in low density, high rotation plasmas, and can last up to 1.4 s, a time comparable to a local resistive time. It considerably delays the appearance of the first edge localized mode.
Additional details
Identifiers
- DOI
- 10.1103/PhysRevLett.104.185003;
- arXiv
- arXiv:0910.5873v1;
Publishing Information
- Journal Title
- Physical Review Letters
- Journal Volume
- 104
- Journal Issue
- 18
- Journal Page Range
- p. 185003-185003.5
- ISSN
- 0031-9007
- CODEN
- PRLTAO
INIS
- Country of Publication
- United States
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 42003837
- Subject category
- S70: PLASMA PHYSICS AND FUSION TECHNOLOGY;
- Descriptors DEI
- CURRENTS; DENSITY; EDGE LOCALIZED MODES; IONS; PLASMA; PLASMA PRESSURE
- Descriptors DEC
- CHARGED PARTICLES; INSTABILITY; PHYSICAL PROPERTIES; PLASMA INSTABILITY; PLASMA MACROINSTABILITIES
Optional Information
- Notes
- (c) 2010 The American Physical Society