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Dielectronic recombination as a function of electric field strengthDielectronic recombination (DR) is the dominant recombination mechanism at coronal temperatures and densities. We present a procedure for calculating DR rate coefficients as a function of electric field strength and apply this method to carbon ions. We focus on the competing effects of enhancement by plasma microfields and rate decrease through collisional excitation and ionization. We find that, in the case of C(3+), a significant rate enhancement results, leading to a reinterpretation of C IV emission-line intensities in the sun and late-type stars. We further consider how macroscopic electric fields, in particular motional electric fields, can affect DR rate coefficients, demonstrating dramatic rate increases for a number of the carbon ions.
Document ID
19930026612
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Reisenfeld, Daniel B.
(Harvard-Smithsonian Center for Astrophysics Cambridge, MA, United States)
Date Acquired
August 15, 2013
Publication Date
October 10, 1992
Publication Information
Publication: Astrophysical Journal, Part 1
Volume: 398
Issue: 1
ISSN: 0004-637X
Subject Category
Solar Physics
Accession Number
93A10609
Funding Number(s)
CONTRACT_GRANT: NAGW-528
CONTRACT_GRANT: NAGW-1687
Distribution Limits
Public
Copyright
Other

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