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Can a Penning ionization discharge simulate the tokamak scrape-off plasma conditions?The tokamak scrape-off (the region between the vacuum vessel wall and the magnetically confined fusion plasma edge), represents a source/sink for the hot fusion plasma. The electron densities and temperatures are in the ranges 10 to the 11th - 10 to the 13th/cu cm and 1-40 eV, respectively (depending on the size, magnetic field intensity and configuration, plasma current, etc). In the work reported, the electron temperature and density have been estimated in a Penning ionization discharge by comparing its spectroscopic emission in the VUV with that predicted by a collisional radiative model. An attempt to directly compare this emission with that of the tokamak edge is briefly described.
Document ID
19900047806
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Finkenthal, M.
(Hebrew Univ. Jerusalem, Israel)
Littman, A.
(Hebrew Univ. Jerusalem, Israel)
Stutman, D.
(Hebrew Univ. Jerusalem, Israel)
Kovnovich, S.
(Hebrew Univ. Jerusalem, Israel)
Mandelbaum, P.
(Hebrew Univ. Jerusalem, Israel)
Schwob, J. L.
(Jerusalem, Hebrew University Israel)
Bhatia, A. K.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
August 14, 2013
Publication Date
April 1, 1990
Publication Information
Publication: Physica Scripta
Volume: 41
Issue: 4, Ap
ISSN: 0031-8949
Subject Category
Plasma Physics
Accession Number
90A34861
Distribution Limits
Public
Copyright
Other

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