Theoretical study of dissociative recombination of tri-atomic molecular ions
POSTER
Abstract
We consider the process of dissociative recombination of tri-atomic ions. Successful theoretical treatment of the dissociative recombination in H$_3^+$ motivated us to extend the treatment to other small molecular ions. The most straightforward extension is to apply the treatment to other isotopomers of H$_3^+$. In this work, we calculated the dissociative recombination rate of H$_2$D$^+$ and D$_2$H$^+$. To represent properly vibrational motion we use hyperspherical coordinates within so-called Slow Variable Representation. The calculated rates for the dissociative recombination of H$_2$D$^+$ and D$_2$H$^+$ are in good agreement with recent experiments in storage rings. In this work, we also suggest a possible solution to the problem posed by a recent stationary afterglow experiment. In that experiment, a very low dissociative recombination rate was found that seems to contradict with the results from storage ring and our calculation. In addition, preliminary results for the dissociative recombination in HCO$^+$ are presented. This work is supported by NSF-ITR grant #PHY-0427460
Authors
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Viatcheslav Kokoouline
Department of Physics, University of Central Florida
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Chris H. Greene
Department of Physics and JILA, University of Colorado, Boulder, Department of Physics and JILA, University of Colorado, Boulder, CO, University of Colorado and JILA, Department of Physics and JILA, University of Colorado, Boulder, Colorado 80309-0440, JILA and Department of Physics, University of Colorado at Boulder, Department of Physics and JILA, University of Colorado, Boulder, CO 80309-0440, USA