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Lookup NU author(s): Professor Alan Dickinson
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The role in radiative association of narrow resonances arising from quasi-bound levels is examined. For the rate coefficient the contribution from such levels is readily calculated in terms of the Einstein A-coefficient from bound rovibrational levels generated using a suitable alternative boundary condition. By locating systematically all the quasi-bound levels, an enhancement by more than an order of magnitude of the rate coefficient for Li(2s) + H(1s) association above about 600 K is obtained. The effect on the LiH abundance in the early Universe is no more than an increase of a factor of 3 for limited ranges of values of the redshift. For the Li(2p) state the effect of narrow resonances appears to have been taken into account in previous calculations.
Author(s): Bennett OJ, Dickinson AS, Leininger T, Gadea FX
Publication type: Article
Publication status: Published
Journal: Monthly Notices of the Royal Astronomical Society
Year: 2003
Volume: 341
Issue: 1
Pages: 361-368
ISSN (print): 0035-8711
ISSN (electronic): 1365-2966
Publisher: Wiley-Blackwell Publishing
URL: http://dx.doi.org/10.1046/j.1365-8711.2003.06422.x
DOI: 10.1046/j.1365-8711.2003.06422.x
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