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On the populating mechanisms of the autoionising states of Al III ions produced in a Penning ionisation dischargeSpectra emitted by Al II and Al III in the 100-1900-A range from a Penning ionization discharge (PID) have been analyzed in order to study the populating mechanisms of the autoionizing levels of the Al III ion. Electron temperature and density estimates and Al III line intensities obtained using a collisional-radiative model are found to differ from those obtained experimentally, implying that the autoionizing levels of the Na I-like ion may be populated, in the PID plasma, by the inner-shell ionization of excited Mg I-like ions. It is suggested that such autoionizing lines could be used to search for populations inversions in the soft X-ray domain.
Document ID
19890063338
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.
(Jerusalem, Hebrew University Israel)
Bhatia, A. K.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
August 14, 2013
Publication Date
March 28, 1989
Publication Information
Publication: Journal of Physics B - Atomic, Molecular and Optical Physics
Volume: 22
ISSN: 0953-4075
Subject Category
Plasma Physics
Accession Number
89A50709
Distribution Limits
Public
Copyright
Other

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