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Title: Asymmetry of the Balmer-alpha line shape and recovery of the effective hydrogen temperature in the tokamak scrape-off layer

An algorithm for recovering the effective temperature of atoms of hydrogen (and its isotopes) in the tokamak scrape-off layer from the asymmetry of the Balmer-alpha line shape is proposed. The algorithm is based on the parametrization of the asymmetry of the line shape caused by the nonlocal character of neutral hydrogen flux from the wall into the tokamak plasma. The accuracy of the algorithm is tested against the results of simulations of the velocity distribution function of deuterium neutrals in the scrape-off layer by the EIRENE code with the use of the source data on the main plasma component in the quasi-stationary stage of the inductive mode of ITER operation calculated by the SOLPS4.3 (B2-EIRENE) code.
Authors:
;  [1] ; ;  [2] ;  [1]
  1. National Research Centre Kurchatov Institute (Russian Federation)
  2. ITER Organization (France)
Publication Date:
OSTI Identifier:
22472451
Resource Type:
Journal Article
Resource Relation:
Journal Name: Plasma Physics Reports; Journal Volume: 41; Journal Issue: 2; Other Information: Copyright (c) 2015 Pleiades Publishing, Ltd.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; ALGORITHMS; ASYMMETRY; COMPUTERIZED SIMULATION; DEUTERIUM; DISTRIBUTION FUNCTIONS; E CODES; HYDROGEN; ITER TOKAMAK; OPERATION; PLASMA; PLASMA SCRAPE-OFF LAYER; PLASMA SIMULATION; S CODES