Published 2003
| Version v1
Journal article
Spontaneous generation of beta-limiting MHD modes in tokamaks
- 1. Institute of Nuclear Fusion, RRC 'Kurchatov Institute', Moscow (Russian Federation)
- 2. Moscow Institute of Physics and Engineering, Moscow (Russian Federation)
- 3. Institute of Physics, University of Sao Paulo, Sao Paulo (Brazil)
Description
It is shown that under conditions typical of fusion reactors of tokamak type, a spontaneous generation of magnetohydrodynamic (MHD) modes is possible, which may limit plasma pressure in ideally stable plasma. Electromagnetic field of such modes consists of two different scale lengths: a large-scale (MHD) component and a small-scale one, which is smaller than Larmor radius of thermal ions. It is suggested that these modes can be responsible for spontaneous generation of neoclassical tearing modes observed experimentally. The value of threshold beta for this mode onset was found to be similar to that in experiments showing NTMs
Additional details
Publishing Information
- Journal Title
- Problems of Atomic Science and Technology. Series: Plasma Physics
- Journal Issue
- no.1/9/
- Journal Page Range
- p. 46-48
- ISSN
- 1682-9344
INIS
- Country of Publication
- Ukraine
- Country of Input or Organization
- Ukraine
- INIS RN
- 35093894
- Subject category
- S70: PLASMA PHYSICS AND FUSION TECHNOLOGY;
- Descriptors DEI
- BETA RATIO; DISPERSION RELATIONS; ELECTROMAGNETIC FIELDS; MAGNETOHYDRODYNAMICS; OSCILLATION MODES; TEARING INSTABILITY; TOKAMAK DEVICES
- Descriptors DEC
- CLOSED PLASMA DEVICES; FLUID MECHANICS; HYDRODYNAMICS; INSTABILITY; MECHANICS; PLASMA INSTABILITY; PLASMA MACROINSTABILITIES; THERMONUCLEAR DEVICES