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Title: Effect of the drift wave turbulence on the evolution of the low-[ital m] tearing modes

Abstract

The effect of the background drift wave turbulence on the evolution of the low-[ital m] tearing modes has been studied, in the quasilinear regime, in various limiting cases. It is found, in the cases of the [ital m]=1 classical, collisionless, and drift-tearing modes, that the turbulence introduces finite real frequencies to these modes, which are otherwise purely growing ones, but reduces their instability activity. In the case of the [ital m][ge]2 classical modes, in a limit [vert bar][alpha][vert bar][sup 1/2][much gt][rho][sub [ital i]], the turbulence enhances the frequencies as well as the growth rates of these modes; and in the case of the [ital m][ge]2 collisionless modes, in the same limit, it enhances the frequencies of these modes, but reduces their instability activity, where [vert bar][alpha][vert bar][sup 1/2] is the current channel width and [rho][sub [ital i]] is the ion Larmor radius.

Authors:
;  [1]
  1. Department of Physics, Indian Institute of Technology, Delhi, New Delhi-110 016 (India)
Publication Date:
OSTI Identifier:
6692942
Resource Type:
Journal Article
Journal Name:
Physics of Plasmas; (United States)
Additional Journal Information:
Journal Volume: 1:1; Journal ID: ISSN 1070-664X
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; TEARING INSTABILITY; DRIFT INSTABILITY; TURBULENCE; CURRENT DENSITY; FREE ENERGY; INSTABILITY GROWTH RATES; LARMOR RADIUS; TOKAMAK DEVICES; CLOSED PLASMA DEVICES; ENERGY; INSTABILITY; PHYSICAL PROPERTIES; PLASMA INSTABILITY; PLASMA MACROINSTABILITIES; PLASMA MICROINSTABILITIES; THERMODYNAMIC PROPERTIES; THERMONUCLEAR DEVICES; 700340* - Plasma Waves, Oscillations, & Instabilities- (1992-)

Citation Formats

Siva Rama Prasad, P V, and Tewari, D P. Effect of the drift wave turbulence on the evolution of the low-[ital m] tearing modes. United States: N. p., 1994. Web. doi:10.1063/1.870559.
Siva Rama Prasad, P V, & Tewari, D P. Effect of the drift wave turbulence on the evolution of the low-[ital m] tearing modes. United States. https://doi.org/10.1063/1.870559
Siva Rama Prasad, P V, and Tewari, D P. 1994. "Effect of the drift wave turbulence on the evolution of the low-[ital m] tearing modes". United States. https://doi.org/10.1063/1.870559.
@article{osti_6692942,
title = {Effect of the drift wave turbulence on the evolution of the low-[ital m] tearing modes},
author = {Siva Rama Prasad, P V and Tewari, D P},
abstractNote = {The effect of the background drift wave turbulence on the evolution of the low-[ital m] tearing modes has been studied, in the quasilinear regime, in various limiting cases. It is found, in the cases of the [ital m]=1 classical, collisionless, and drift-tearing modes, that the turbulence introduces finite real frequencies to these modes, which are otherwise purely growing ones, but reduces their instability activity. In the case of the [ital m][ge]2 classical modes, in a limit [vert bar][alpha][vert bar][sup 1/2][much gt][rho][sub [ital i]], the turbulence enhances the frequencies as well as the growth rates of these modes; and in the case of the [ital m][ge]2 collisionless modes, in the same limit, it enhances the frequencies of these modes, but reduces their instability activity, where [vert bar][alpha][vert bar][sup 1/2] is the current channel width and [rho][sub [ital i]] is the ion Larmor radius.},
doi = {10.1063/1.870559},
url = {https://www.osti.gov/biblio/6692942}, journal = {Physics of Plasmas; (United States)},
issn = {1070-664X},
number = ,
volume = 1:1,
place = {United States},
year = {Sat Jan 01 00:00:00 EST 1994},
month = {Sat Jan 01 00:00:00 EST 1994}
}