This title appears in the Scientific Report :
2001
Please use the identifier:
http://dx.doi.org/10.1016/S0022-3115(00)00652-8 in citations.
Noble gas enrichment studies at JET
Noble gas enrichment studies at JET
Adequate helium exhaust has been achieved in reactor-relevant ELMy H-mode plasmas in JET performed in the MKII AP and MKII GB divertor geometry. The divertor-characteristic quantities of noble gas compression and enrichment have been experimentally inferred from Charge Exchange Recombination Spectro...
Saved in:
Personal Name(s): | Groth, M. |
---|---|
Andrew, P. / Fundamenski, E. / von Hellermann, M. | |
Contributing Institute: |
Institutsbereich I; IPP-1 Institutsbereich II; IPP-2 |
Published in: | Journal of nuclear materials, 290-293 (2001) S. 867 - 871 |
Imprint: |
Amsterdam [u.a.]
Elsevier Science
2001
|
Physical Description: |
867 - 871 |
DOI: |
10.1016/S0022-3115(00)00652-8 |
Document Type: |
Journal Article |
Research Program: |
TEC-FOM |
Series Title: |
Journal of Nuclear Materials
290 |
Subject (ZB): | |
Publikationsportal JuSER |
Adequate helium exhaust has been achieved in reactor-relevant ELMy H-mode plasmas in JET performed in the MKII AP and MKII GB divertor geometry. The divertor-characteristic quantities of noble gas compression and enrichment have been experimentally inferred from Charge Exchange Recombination Spectroscopy measurements in the core plasma, and from spectroscopic analysis of a Penning gauge discharge in the exhaust gas. The retention of helium was found to be satisfactory for a next-step device, with enrichment factors exceeding 0.1. The helium enrichment decreases with increasing core plasma density, while the neon enrichment has the opposite behaviour, Analytic and numerical analyses of these plasmas using the divertor impurity code package DIVIMP/NIMBUS support the explanation that the enrichment of noble gases depends significantly on the penetration depth of the impurity neutrals with respect to the fuel atoms. Changes of the divertor plasma configuration and divertor geometry have no effect on the enrichment. (C) 2001 Published by Elsevier Science B.V. |