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An optical probe for local ion temperature measurements in a plasma
Author(s) -
Kiss'ovski Zh.,
Bohmeyer W.,
Fussmann G.
Publication year - 2003
Publication title -
contributions to plasma physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.531
H-Index - 47
eISSN - 1521-3986
pISSN - 0863-1042
DOI - 10.1002/ctpp.200410061
Subject(s) - plasma , emissivity , ion , doppler effect , langmuir probe , spectral resolution , atomic physics , plasma diagnostics , materials science , limiting , image resolution , doppler broadening , optics , resolution (logic) , physics , spectral line , nuclear physics , astronomy , engineering , artificial intelligence , computer science , mechanical engineering , quantum mechanics
Local measurements of the ion temperature and the spectral emissivity have been performed in the magnetized plasma of the PSI‐2 device using an optical probe. The proper operation of the probe could be demonstrated. The probe collects the light emission from a small separated plasma volume thus enabling to determine the ion temperature from Doppler‐broadening of suited spectral lines. In addition to the technical features stray light and finite Larmor radii effects ‐ limiting the spatial resolution ‐ are discussed. (© 2003 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)