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Temporal behavior of the electron density profile during limiter biasing in the HYBTOK-II tokamak

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Abstract

A rapid change in the detailed edge electron density profile during positively biased limiter experiment is obtained with high temporal resolution of {approx}20 {mu}s using a laser blow-off lithium beam probe technique in HYBTOK-II tokamak. The transient change in the electron density profile and the movement of the position where a steep density gradient is formed are experimentally observed. The temporal behavior of the electron density profile correlates well with reductions in the biasing current and H{sub {alpha}} emission in the scrape-off layer, and the suppression of electrostatic fluctuations near the edge of the core region. (author).
Authors:
Sasaki, S; Uesugi, Y; Takamura, S; [1]  Sanuki, H; Kadota, K
  1. Nagoya Univ. (Japan). Faculty of Engineering
Publication Date:
Nov 01, 1993
Product Type:
Technical Report
Report Number:
NIFS-257
Reference Number:
SCA: 700330; PA: JPN-94:004107; EDB-94:085836; ERA-19:023157; NTS-95:001350; SN: 94001212197
Resource Relation:
Other Information: PBD: Nov 1993
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; TOKAMAK DEVICES; PLASMA POTENTIAL; PLASMA DENSITY; PLASMA RADIAL PROFILES; PLASMA WAVES; PLASMA SCRAPE-OFF LAYER; CONFINEMENT TIME; PLASMA; LIMITERS; 700330; PLASMA KINETICS, TRANSPORT, AND IMPURITIES
OSTI ID:
10156037
Research Organizations:
National Inst. for Fusion Science, Nagoya (Japan)
Country of Origin:
Japan
Language:
English
Other Identifying Numbers:
Other: ON: DE94770609; TRN: JP9404107
Availability:
OSTI; NTIS; INIS
Submitting Site:
JPN
Size:
17 p.
Announcement Date:
Jul 06, 2005

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Citation Formats

Sasaki, S, Uesugi, Y, Takamura, S, Sanuki, H, and Kadota, K. Temporal behavior of the electron density profile during limiter biasing in the HYBTOK-II tokamak. Japan: N. p., 1993. Web.
Sasaki, S, Uesugi, Y, Takamura, S, Sanuki, H, & Kadota, K. Temporal behavior of the electron density profile during limiter biasing in the HYBTOK-II tokamak. Japan.
Sasaki, S, Uesugi, Y, Takamura, S, Sanuki, H, and Kadota, K. 1993. "Temporal behavior of the electron density profile during limiter biasing in the HYBTOK-II tokamak." Japan.
@misc{etde_10156037,
title = {Temporal behavior of the electron density profile during limiter biasing in the HYBTOK-II tokamak}
 author = {Sasaki, S, Uesugi, Y, Takamura, S, Sanuki, H, and Kadota, K}
 abstractNote = {A rapid change in the detailed edge electron density profile during positively biased limiter experiment is obtained with high temporal resolution of {approx}20 {mu}s using a laser blow-off lithium beam probe technique in HYBTOK-II tokamak. The transient change in the electron density profile and the movement of the position where a steep density gradient is formed are experimentally observed. The temporal behavior of the electron density profile correlates well with reductions in the biasing current and H{sub {alpha}} emission in the scrape-off layer, and the suppression of electrostatic fluctuations near the edge of the core region. (author).}
 place = {Japan}
 year = {1993}
 month = {Nov}
 }