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Transition to H-mode by energetic electrons

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Abstract

Effect of the electron loss due to the toroidal ripple on an H-mode transition is studied. When energetic electrons exist in tokamaks, e.g., in the case of the current drive by lower hybrid (LH) waves, the edge electric field can show the bifurcation to the more positive value. In this state, both the electron loss and ion loss (such as loss cone loss) are reduced. The criterion for the transition is derived. Comparison with H-mode in JT-60 LH plasma shows a qualitative agreement. (author).
Authors:
Publication Date:
Jul 01, 1992
Product Type:
Technical Report
Report Number:
NIFS-158
Reference Number:
SCA: 700340; PA: JPN-93:001111; SN: 93000936610
Resource Relation:
Other Information: PBD: Jul 1992
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; H-MODE PLASMA CONFINEMENT; TOKAMAK DEVICES; ELECTRON TEMPERATURE; SPATIAL DISTRIBUTION; ELECTRIC FIELDS; LOWER HYBRID CURRENT DRIVE; ELECTRON LOSS; 700340; PLASMA WAVES, OSCILLATIONS, AND INSTABILITIES
OSTI ID:
10123173
Research Organizations:
National Inst. for Fusion Science, Nagoya (Japan)
Country of Origin:
Japan
Language:
English
Other Identifying Numbers:
Other: ON: DE93764420; TRN: JP9301111
Availability:
OSTI; NTIS; INIS
Submitting Site:
JPN
Size:
19 p.
Announcement Date:
Jun 30, 2005

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Citation Formats

Itoh, Kimitaka, and Itoh, Sanae. Transition to H-mode by energetic electrons. Japan: N. p., 1992. Web.
Itoh, Kimitaka, & Itoh, Sanae. Transition to H-mode by energetic electrons. Japan.
Itoh, Kimitaka, and Itoh, Sanae. 1992. "Transition to H-mode by energetic electrons." Japan.
@misc{etde_10123173,
title = {Transition to H-mode by energetic electrons}
 author = {Itoh, Kimitaka, and Itoh, Sanae}
 abstractNote = {Effect of the electron loss due to the toroidal ripple on an H-mode transition is studied. When energetic electrons exist in tokamaks, e.g., in the case of the current drive by lower hybrid (LH) waves, the edge electric field can show the bifurcation to the more positive value. In this state, both the electron loss and ion loss (such as loss cone loss) are reduced. The criterion for the transition is derived. Comparison with H-mode in JT-60 LH plasma shows a qualitative agreement. (author).}
 place = {Japan}
 year = {1992}
 month = {Jul}
 }