Effects of ICRH on electrostatic fluctuations and particle transport in the boundary plasma of TEXTOR
Creators
- 1. Association Euratom-Kernforschungsanlage Juelich (Germany). Inst. fuer Plasmaphysik
- 2. Academy of Sciences, Moscow (USSR). Inst. of High Temperature Physics
- 3. Ecole Royale Militaire, Association Euratom-Etat Belge, Brussels (Belgium). Lab. de Physique des Plasmas
Description
Direct current (DC) driven and turbulence driven cross-field particle fluxes have been deduced from Langmuir probe measurements during discharges with ion cyclotron resonance heating (ICRH) in the TEXTOR tokamak. Spectral analysis of fluctuations of the floating potential at spatially separated probe pins has been used to determine the velocity associated with the poloidal rotation of the boundary plasma. Characteristics of the turbulence spectra of density and potential fluctuations at the edge during ICRH have been measured and compared with the corresponding spectra during standard ohmically heated discharges. It has been observed that both DC driven and turbulence driven fluxes increase significantly during ICRH. The measured high particle fluxes indicate motion in DC convective cells. The DC convective flux and the turbulence driven flux are partly counteracting. (author). Letter-to-the-editor. 24 refs, 2 figs
Additional details
Publishing Information
- Journal Title
- Nuclear Fusion
- Journal Volume
- 31
- Journal Issue
- 12
- Series
- Nucl. Fusion.
- Journal Page Range
- 2383-2391
- ISSN
- 0029-5515
- CODEN
- NUFUA
INIS
- Country of Publication
- International Atomic Energy Agency (IAEA)
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 23015722
- Subject category
- S70: PLASMA PHYSICS AND FUSION TECHNOLOGY; S70: PLASMA PHYSICS AND FUSION TECHNOLOGY; S70: PLASMA PHYSICS AND FUSION TECHNOLOGY;
- Resource subtype / Literary indicator
- Numerical Data
- Descriptors DEI
- BOUNDARY LAYERS; CHARGED-PARTICLE TRANSPORT; COMPARATIVE EVALUATIONS; CONVECTION; ELECTRIC POTENTIAL; EXPERIMENTAL DATA; FLUCTUATIONS; FLUID FLOW; ICR HEATING; JOULE HEATING; LANGMUIR PROBE; PARTICLE LOSSES; PLASMA DENSITY; SPECTRA; TEXTOR TOKAMAK; TURBULENCE
- Descriptors DEC
- CLOSED PLASMA DEVICES; DATA; ELECTRIC PROBES; ENERGY TRANSFER; EVALUATION; HEAT TRANSFER; HEATING; HIGH-FREQUENCY HEATING; INFORMATION; LAYERS; NUMERICAL DATA; PLASMA HEATING; PROBES; RADIATION TRANSPORT; THERMONUCLEAR DEVICES; TOKAMAK DEVICES; VARIATIONS