Indirect dissociative recombination of LiH$_2^+$ + e$^-$

Details Indirect dissociative recombination of LiH$_2^+$ + e$^-$ Indirect dissociative recombination of LiH$_2^+$ + e$^-$

2008-07-31

arxiv.org/abs/0807.5046v2

Physics

Chemical Physics

Submitted to phys rev A

Scientific paper

10.1103/PhysRevA.78.052704

We present the results of calculations determining the cross sections for indirect dissociative recombination of LiH$_2^+$ + $e^-$. These calculations employ multichannel quantum defect theory and Fano's rovibrational frame transformation technique to obtain the indirect DR cross section in the manner described by Ref.\cite{hamilton}. We use \textit{ab initio} electron-molecule scattering codes to calculate quantum defects. In contrast to H$_3^+$, the LiH$_2^+$ molecule exhibits considerable mixing between rotation and vibration; however, by incorporating an exact treatment of the rovibrational dynamics of the LiH$_2^+$, we show that this mixing has only a small effect on the observed DR rate. We calculate a large DR rate for this cation, 4.0 $\times$ 10$^{-7}$ cm$^{3}$ s$^{-1}$ at 1 meV incident electron energy.

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