This title appears in the Scientific Report :
2005
Please use the identifier:
http://dx.doi.org/10.1016/j.jnucmat.2004.10.160 in citations.
Role of wall implantation of charge exchange neutrals in the deuterium retention for Tore Supra long discharges
Role of wall implantation of charge exchange neutrals in the deuterium retention for Tore Supra long discharges
In Tore Supra long pulses, particle balance gives evidence that a constant fraction of the injected gas (typically 50%) is retained in the wall for the duration of the shot, showing no sign of wall saturation after more than 6 min of discharge. During the discharge, the retention rate first decrease...
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Personal Name(s): | Tsitrone, E. |
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Reiter, D. / Loarer, T. / Brosset, C. / Bucalossi, J. / Begrambekov, L. / Grisolia, C. / Grosman, A. / Gunn, J. / Hogan, J. / Mitteau, R. / Pégourié, B. / Ghendrih, P. / Reichle, R. / Roubin, P. | |
Contributing Institute: |
Institut für Plasmaphysik; IPP |
Published in: | Journal of nuclear materials, 337-339 (2005) S. 539 - 543 |
Imprint: |
Amsterdam [u.a.]
Elsevier Science
2005
|
Physical Description: |
539 - 543 |
DOI: |
10.1016/j.jnucmat.2004.10.160 |
Document Type: |
Journal Article |
Research Program: |
Kernfusion und Plasmaforschung |
Series Title: |
Journal of Nuclear Materials
337-339 |
Subject (ZB): | |
Publikationsportal JuSER |
In Tore Supra long pulses, particle balance gives evidence that a constant fraction of the injected gas (typically 50%) is retained in the wall for the duration of the shot, showing no sign of wall saturation after more than 6 min of discharge. During the discharge, the retention rate first decreases (phase 1), then remains constant throughout the pulse (phase 2). Phase 1 could be interpreted as implantation of particles combined with a constant codeposition rate, while phase 2 could correspond to codeposition alone, once the implanted surfaces are saturated with deuterium, This paper presents a possible contribution of charge exchange neutrals to the implantation process, based on modelling results with the Eirene neutral transport code. A complex pattern of particle implantation is evidenced, with saturation time constants ranging from less than one to several hundreds seconds, compatible with the experimental behaviour during phase 1. (c) 2004 Elsevier B.V. All rights reserved. |