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Spectroscopic studies in JT-60

Technical Report:

Abstract

This paper summarizes the spectroscopic studies in JT-60 which was constructed to explore the break-even plasma. The content is as follows; (1) In order to study impurity behaviors in the JT-60 plasma, a spectroscopic diagnostic system, which is capable of measuring many spectra of impurity ions and their spatial distributions, has been developed. (2) A Rowland-type grazing incidence monochromator has been absolutely calibrated with a branching ratio method. And multi-channel spectrometers have been absolutely calibrated in the wavelength region of 275-1250A using synchrotron radiation. (3) The transport coefficients (D, c{sub v}) for impurity have been measured by observing the time evolutions of line intensities of titanium in ohmically heated and neutral beam heated discharges. (4) Impurity contents have been measured in limited discharges and diverted discharges with different materials for the first wall, namely metallic wall and graphite wall. (5) For the Lyman-{alpha} line of TiXXII, the intensity ratio of its fine structure components (1 {sup 2}S{sub 1/2} - 2 {sup 2}P{sub 1/2,3/2}) has been measured in discharges with various heating modes. (6) Energy levels and oscillator strengths have been calculated for MoXV-XL. (J.P.N.).
Authors:
Kubo, Hirotaka [1] 
  1. Japan Atomic Energy Research Inst., Naka, Ibaraki (Japan). Naka Fusion Research Establishment
Publication Date:
Sep 01, 1991
Product Type:
Technical Report
Report Number:
JAERI-M-91-135
Reference Number:
SCA: 700320; PA: JPN-91:011154; SN: 92000630570
Resource Relation:
Other Information: PBD: Sep 1991
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; JT-60 TOKAMAK; SPECTROSCOPY; PLASMA IMPURITIES; OPTICAL SPECTROMETERS; LYMAN LINES; ENERGY LEVELS; ULTRAVIOLET SPECTROMETERS; ALPHA SPECTRA; MOLYBDENUM IONS; ENERGY SPECTRA; 700320; PLASMA DIAGNOSTIC TECHNIQUES AND INSTRUMENTATION
OSTI ID:
10109041
Research Organizations:
Japan Atomic Energy Research Inst., Tokyo (Japan)
Country of Origin:
Japan
Language:
Japanese
Other Identifying Numbers:
Other: ON: DE92750963; TRN: JP9111154
Availability:
OSTI; NTIS (US Sales Only); INIS
Submitting Site:
JPN
Size:
146 p.
Announcement Date:
Jun 30, 2005

Technical Report:

Citation Formats

Kubo, Hirotaka. Spectroscopic studies in JT-60. Japan: N. p., 1991. Web.
Kubo, Hirotaka. Spectroscopic studies in JT-60. Japan.
Kubo, Hirotaka. 1991. "Spectroscopic studies in JT-60." Japan.
@misc{etde_10109041,
title = {Spectroscopic studies in JT-60}
author = {Kubo, Hirotaka}
abstractNote = {This paper summarizes the spectroscopic studies in JT-60 which was constructed to explore the break-even plasma. The content is as follows; (1) In order to study impurity behaviors in the JT-60 plasma, a spectroscopic diagnostic system, which is capable of measuring many spectra of impurity ions and their spatial distributions, has been developed. (2) A Rowland-type grazing incidence monochromator has been absolutely calibrated with a branching ratio method. And multi-channel spectrometers have been absolutely calibrated in the wavelength region of 275-1250A using synchrotron radiation. (3) The transport coefficients (D, c{sub v}) for impurity have been measured by observing the time evolutions of line intensities of titanium in ohmically heated and neutral beam heated discharges. (4) Impurity contents have been measured in limited discharges and diverted discharges with different materials for the first wall, namely metallic wall and graphite wall. (5) For the Lyman-{alpha} line of TiXXII, the intensity ratio of its fine structure components (1 {sup 2}S{sub 1/2} - 2 {sup 2}P{sub 1/2,3/2}) has been measured in discharges with various heating modes. (6) Energy levels and oscillator strengths have been calculated for MoXV-XL. (J.P.N.).}
place = {Japan}
year = {1991}
month = {Sep}
}