Session T1: Poster Session III (4:00 pm - 6:00 pm)

4:00 PM–4:00 PM, Friday, May 28, 2010
Room: Exhibit Hall


Abstract ID: BAPS.2010.DAMOP.T1.199

Abstract: T1.00199 : Slow Collisions of Si3+ with Atomic Hydrogen

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Authors:

  D.C. Joseph
  J.-P. Gu
  B.C. Saha
    (Department of Physics, Florida A\&M University, Tallahassee, FL-32307)

  H.P. Liebermann
  P. Funke
  R.J. Buenker
    (Bergische Universitat, Wuppertal D-42096 Wuppertal, Germany)

Low energy electron capture from hydrogen atom by multi-charged ions continues to be of interest and applications include both magnetically confined fusion and astrophysical plasmas. The charge exchange process reported here\textit{, Si}$^{3+} + H$ $\rightarrow $ \textit{Si}$^{2+} + H^{+}$ is an important destruction mechanism of Si$^{3+}$ in photo-ionized gas. The soft X-ray emission from comets has been explained by charge transfer of solar wind ions, among them Si$^{3+}$, with neutrals in the cometary gas vapor. The state selective cross sections are evaluated using the full quantum [1] and semi-classical molecular orbital close coupling (MOCC) [2] methods. Adiabatic potentials and wave functions for a number of low-lying singlet and triplet states of and symmetry are calculated wing the MRD-CI package [3]. Details will be presented at the conference. \\[4pt] [1] L. B. Zhao, D. C. Joseph, B. C. Saha, H. P. Liebermann, P. Funke and R. J. Buenker, Phys. Rev A, \textbf{79}, 034701 (1009).\\[0pt] [2] M. Kimura and N. F. Lane, At. Mol. Opt. Phys \textbf{26}, 79 (1990).\\[0pt] [3] R. J. Buenker, ``Current Aspects of Quantum Chemistry 1981, Vol \textbf{21}, edited by R. Carbo (Elsevier, Amsterdam) p 17.

To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2010.DAMOP.T1.199