Influence of radial electric field on Alfvén-type instabilities

T. S. Hahm; W. M. Tang

doi:10.1063/1.870606

Influence of radial electric field on Alfvén-type instabilities

T. S. Hahm, W. M. Tang

PPPL Computational Science

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5 Scopus citations

Abstract

The influence of the large-scale radial electric field, E_r ⁽⁰⁾ on the frequency of shear-Alfvén-type instability is analyzed. A frozen-in-flux constraint and the moderate-β ion gyrokinetic equation are used in the derivation. The present analysis indicates that the frequency predicted by a theory without E_r⁽⁰⁾ effect should be Doppler shifted by k·V_E for comparison to the experimentally observed frequency. A specific example of the practical relevance of the result is given regarding possible identification of the edge-localized-mode-associated magnetic activity recently observed in PBX-M [Plasma Physics and Controlled Nuclear Fusion Research (International Atomic Energy Agency, Vienna, 1989), Vol. 1, p. 97] tokamak experiment.

Original language	English (US)
Pages (from-to)	2099-2100
Number of pages	2
Journal	Physics of Plasmas
Volume	1
Issue number	6
DOIs	https://doi.org/10.1063/1.870606
State	Published - 1994

All Science Journal Classification (ASJC) codes

Condensed Matter Physics

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10.1063/1.870606

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title = "Influence of radial electric field on Alfv{\'e}n-type instabilities",

abstract = "The influence of the large-scale radial electric field, Er (0) on the frequency of shear-Alfv{\'e}n-type instability is analyzed. A frozen-in-flux constraint and the moderate-β ion gyrokinetic equation are used in the derivation. The present analysis indicates that the frequency predicted by a theory without Er(0) effect should be Doppler shifted by k·VE for comparison to the experimentally observed frequency. A specific example of the practical relevance of the result is given regarding possible identification of the edge-localized-mode-associated magnetic activity recently observed in PBX-M [Plasma Physics and Controlled Nuclear Fusion Research (International Atomic Energy Agency, Vienna, 1989), Vol. 1, p. 97] tokamak experiment.",

author = "Hahm, \{T. S.\} and Tang, \{W. M.\}",

year = "1994",

doi = "10.1063/1.870606",

language = "English (US)",

volume = "1",

pages = "2099--2100",

journal = "Physics of Plasmas",

issn = "1070-664X",

publisher = "American Institute of Physics",

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T1 - Influence of radial electric field on Alfvén-type instabilities

AU - Hahm, T. S.

AU - Tang, W. M.

PY - 1994

Y1 - 1994

N2 - The influence of the large-scale radial electric field, Er (0) on the frequency of shear-Alfvén-type instability is analyzed. A frozen-in-flux constraint and the moderate-β ion gyrokinetic equation are used in the derivation. The present analysis indicates that the frequency predicted by a theory without Er(0) effect should be Doppler shifted by k·VE for comparison to the experimentally observed frequency. A specific example of the practical relevance of the result is given regarding possible identification of the edge-localized-mode-associated magnetic activity recently observed in PBX-M [Plasma Physics and Controlled Nuclear Fusion Research (International Atomic Energy Agency, Vienna, 1989), Vol. 1, p. 97] tokamak experiment.

AB - The influence of the large-scale radial electric field, Er (0) on the frequency of shear-Alfvén-type instability is analyzed. A frozen-in-flux constraint and the moderate-β ion gyrokinetic equation are used in the derivation. The present analysis indicates that the frequency predicted by a theory without Er(0) effect should be Doppler shifted by k·VE for comparison to the experimentally observed frequency. A specific example of the practical relevance of the result is given regarding possible identification of the edge-localized-mode-associated magnetic activity recently observed in PBX-M [Plasma Physics and Controlled Nuclear Fusion Research (International Atomic Energy Agency, Vienna, 1989), Vol. 1, p. 97] tokamak experiment.

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DO - 10.1063/1.870606

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AN - SCOPUS:0348031846

SN - 1070-664X

VL - 1

SP - 2099

EP - 2100

JO - Physics of Plasmas

JF - Physics of Plasmas

IS - 6

ER -

Influence of radial electric field on Alfvén-type instabilities

Abstract

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