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Review of high Z materials for PSI applications

Technical Report:

Abstract

Application of carbon based low Z materials to PFM has significantly improved plasma parameters in large tokamaks. There are, however, serious concerns of erosion, neutron damage etc. for application of low Z materials in future D - T burning machine. To apply high Z metals to PFM, there are several issues to be solved; high Z impurity production by sputtering, their accumulation in plasma center, and high radiation loss. Because of these concerns high Z metals are not widely employed nor planned to be used in the present large tokamaks. Since our efforts have been concentrated to optimize the low Z materials, little systematic investigations for high Z materials in tokamak have been done, lacking data base especially those concerning the impacts on plasma core. In order to employ high Z material as PFM near future, material properties related to impurity production and hydrogen recycling are reviewed and discussed what is important and what shall be done. (author) 109 refs.
Authors:
Tanabe, Tetsuo; [1]  Noda, Nobuaki; Nakamura, Hiroo
  1. Osaka Univ., Suita (Japan). Faculty of Engineering
Publication Date:
Jun 01, 1992
Product Type:
Technical Report
Report Number:
NIFS-152
Reference Number:
SCA: 700480; 700420; PA: JPN-92:011124; SN: 93000918529
Resource Relation:
Other Information: PBD: Jun 1992
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; TOKAMAK DEVICES; WALL EFFECTS; PLASMA IMPURITIES; FIRST WALL; MOLYBDENUM; TITANIUM CARBIDES; MAGNETIC CONFINEMENT; POWER LOSSES; 700480; 700420; COMPONENT DEVELOPMENT; MATERIALS STUDIES; PLASMA-FACING COMPONENTS
OSTI ID:
10111177
Research Organizations:
National Inst. for Fusion Science, Nagoya (Japan)
Country of Origin:
Japan
Language:
English
Other Identifying Numbers:
Other: ON: DE93753203; TRN: JP9211124
Availability:
OSTI; NTIS; INIS
Submitting Site:
JPN
Size:
50 p.
Announcement Date:
Jun 30, 2005

Technical Report:

Citation Formats

Tanabe, Tetsuo, Noda, Nobuaki, and Nakamura, Hiroo. Review of high Z materials for PSI applications. Japan: N. p., 1992. Web.
Tanabe, Tetsuo, Noda, Nobuaki, & Nakamura, Hiroo. Review of high Z materials for PSI applications. Japan.
Tanabe, Tetsuo, Noda, Nobuaki, and Nakamura, Hiroo. 1992. "Review of high Z materials for PSI applications." Japan.
@misc{etde_10111177,
title = {Review of high Z materials for PSI applications}
author = {Tanabe, Tetsuo, Noda, Nobuaki, and Nakamura, Hiroo}
abstractNote = {Application of carbon based low Z materials to PFM has significantly improved plasma parameters in large tokamaks. There are, however, serious concerns of erosion, neutron damage etc. for application of low Z materials in future D - T burning machine. To apply high Z metals to PFM, there are several issues to be solved; high Z impurity production by sputtering, their accumulation in plasma center, and high radiation loss. Because of these concerns high Z metals are not widely employed nor planned to be used in the present large tokamaks. Since our efforts have been concentrated to optimize the low Z materials, little systematic investigations for high Z materials in tokamak have been done, lacking data base especially those concerning the impacts on plasma core. In order to employ high Z material as PFM near future, material properties related to impurity production and hydrogen recycling are reviewed and discussed what is important and what shall be done. (author) 109 refs.}
place = {Japan}
year = {1992}
month = {Jun}
}