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.
Tanabe, Tetsuo;
[1]
Noda, Nobuaki;
Nakamura, Hiroo
- Osaka Univ., Suita (Japan). Faculty of Engineering
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}
}
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}
}