Radiative association and inverse predissociation of oxygen atoms

Details Radiative association and inverse predissociation of oxygen atoms Radiative association and inverse predissociation of oxygen atoms

1994-11-15

arxiv.org/abs/chem-ph/9411010v1

Phys. Rev. A, vol. 51, 3021 (1995)

Physics

Chemical Physics

submitted to Phys. Rev. A (Sept. 7., 1994), 19 pages, 4 figures, latex (revtex3.0 and epsf.sty)

Scientific paper

10.1103/PhysRevA.51.3021

The formation of $\mbox{O}_2$ by radiative association and by inverse predissociation of ground state oxygen atoms is studied using quantum-mechanical methods. Cross sections, emission spectra, and rate coefficients are presented and compared with prior experimental and theoretical results. At temperatures below 1000~K radiative association occurs by approach along the $1\,{}^3\Pi_u$ state of $\mbox{O}_2$ and above 1000~K inverse predissociation through the $\mbox{B}\,{}^3\Sigma_u^-$ state is the dominant mechanism. This conclusion is supported by a quantitative comparison between the calculations and data obtained from hot oxygen plasma spectroscopy.

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