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Title: On gas desorption from the tokamak first wall during edge localized modes

The effect of gas desorption from the tokamak first wall on the pedestal recovery in the H-mode after an edge-localized-mode burst is considered. Results of FACE code simulations of hydrogen desorption from a beryllium wall are presented. It is found that the wall has a significant effect on plasma processes only at sufficiently low temperatures (of about 400 K), which agrees with qualitative estimates obtained earlier in the zero-dimensional approximation.
Authors:
 [1] ; ;  [2]
  1. National Nuclear Research University Moscow Engineering and Physics Institute (Russian Federation)
  2. University of California, San Diego (United States)
Publication Date:
OSTI Identifier:
22216069
Resource Type:
Journal Article
Resource Relation:
Journal Name: Plasma Physics Reports; Journal Volume: 39; Journal Issue: 11; Other Information: Copyright (c) 2013 Pleiades Publishing, Ltd.; http://www.springer-ny.com; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; BERYLLIUM; DESORPTION; EDGE LOCALIZED MODES; FIRST WALL; H-MODE PLASMA CONFINEMENT; HYDROGEN; MATERIALS RECOVERY; PLASMA; SIMULATION; TEMPERATURE RANGE 0065-0273 K; TOKAMAK DEVICES