Effect of aspect ratio on magnetic field fluctuations in the reversed-field pinch
Creators
- 1. Science Applications International Corporation, 10260 Campus Point Drive, San Diego, California 92121 (United States)
- 2. Division of Fusion Plasma Physics (Association EURATOM-NFR), Alfven Laboratory, Royal Institute of Technology, S-100 44, Stockholm (Sweden)
Description
The effect of aspect ratio on magnetic field fluctuations in reversed-field pinches is investigated using a three-dimensional magnetohydrodynamic code. Configurations with aspect ratios of 1.1, 2.2, and 4.4 are modeled. The results are extrapolated to aspect ratio 8.8 for comparison with the Extrap T1 experiment [Nucl. Fusion 34, 427 (1994)]. It is found that the average modal amplitudes decrease with aspect ratio. However, the spectrum broadens correspondingly, resulting in negligible effect on the magnetic fluctuation level. The computed spectrum dynamics are found to be in good agreement with experimental observations on the T1 experiment. Quantitative evaluations of the field line stochasticity indicate no dependence of the mean magnetic field diffusion rate on aspect ratio. copyright 1995 American Institute of Physics
Additional details
Publishing Information
- Journal Title
- Physics of Plasmas
- Journal Volume
- 2
- Journal Issue
- 9
- Journal Page Range
- p. 3407-3411.
- ISSN
- 1070-664X
- CODEN
- PHPAEN
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 27024393
- Subject category
- S70: PLASMA PHYSICS AND FUSION TECHNOLOGY; S70: PLASMA PHYSICS AND FUSION TECHNOLOGY; S70: PLASMA PHYSICS AND FUSION TECHNOLOGY;
- Descriptors DEI
- ASPECT RATIO; COMPUTER CODES; FLUCTUATIONS; MAGNETOHYDRODYNAMICS; PLASMA SIMULATION; REVERSE-FIELD PINCH; TRANSPORT THEORY
- Descriptors DEC
- FLUID MECHANICS; HYDRODYNAMICS; MECHANICS; PINCH EFFECT; SIMULATION; VARIATIONS