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Stability of the Ion-temperature-gradient-driven Mode with Negative Magnetic Shear

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Date

2003

Authors

Uchida, Nobuya
Sen, Sudip
Fukuyama, A
McCarthy, Daniel R

Journal Title

Journal ISSN

Volume Title

Publisher

American Institute of Physics (AIP)

Abstract

A model for transition to the enhanced reverse shear (ERS) or negative central shear (NCS) mode triggered ion tokamaks is presented. Studies show that when the magnetic shear has the same sign as the second derivative of the parallel velocity with respect to the radial coordinate, the ITG mode may become more unstable. On the other hand, when the magnetic shear has the opposite sign to the second derivative of the parallel velocity, the ITG mode may be completely stabilized.

Description

Keywords

Keywords: Computer simulation; Current density; Eigenvalues and eigenfunctions; Electron transitions; Magnetic field effects; Plasma confinement; Plasma heating; Plasma turbulence; Shear stress; Temperature; Thermal gradients; Tokamak devices; Electron dynamics; En

Citation

URI

http://hdl.handle.net/1885/87845

Collections

ANU Research Publications

Source

Physics of Plasmas

Type

Journal article

Book Title

Entity type

Access Statement

License Rights

DOI

10.1063/1.1616015

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