Published July 1998
| Version v1
Journal article
A mechanism of bifurcation to strongly sheared toroidal rotation in the radiatively improved mode in TEXTOR-94
Creators
- 1. Institut fuer Plasmaphysik, Forschungszentrum Juelich GmbH, Euratom Association, Juelich (Germany)
- 2. FOM Instituut voor Plasmafysica Rijnhuizen, Euratom Association, Nieuwegein (Netherlands)
Description
A mechanism, based on the dependence of the anomalous plasma viscosity on the velocity gradient, is proposed to explain a strong shearing of the ion toroidal velocity in the radiatively improved (RI) mode in TEXTOR-94 with unbalanced neutral injection. The conditions of the bifurcation into this plasma state with a barrier in the ion momentum and heat transport are analysed, and it is demonstrated that the density peaking caused by puffing of impurities is of principal importance to achieve them. The time evolution of the ion toroidal velocity and temperature by the transition into the RI mode is modelled. (author). Letter-to-the-editor
Additional details
Publishing Information
- Journal Title
- Nuclear Fusion
- Journal Volume
- 38
- Journal Issue
- 7
- Journal Page Range
- p. 961-965
- ISSN
- 0029-5515
INIS
- Country of Publication
- International Atomic Energy Agency (IAEA)
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 29051434
- Subject category
- S70: PLASMA PHYSICS AND FUSION TECHNOLOGY; S70: PLASMA PHYSICS AND FUSION TECHNOLOGY;
- Descriptors DEI
- ELECTRON TEMPERATURE; HEAT TRANSFER; NEUTRAL ATOM BEAM INJECTION; PLASMA IMPURITIES; PLASMA RADIAL PROFILES; ROTATION; SHEAR; TEXTOR TOKAMAK; VISCOSITY
- Descriptors DEC
- BEAM INJECTION; CLOSED PLASMA DEVICES; ENERGY TRANSFER; IMPURITIES; THERMONUCLEAR DEVICES; TOKAMAK DEVICES
Optional Information
- Notes
- 15 refs, 5 figs