Dissociation branching ratios of electronically excited OD<sup>+</sup> transients

ORAL

Abstract

We investigate electronically excited OD+ transients formed in sequential fragmentation of heavy water dications following double ionization by a single photon. The dissociation of these excited OD+ states, driven by spin-orbit coupling and charge transfer, leads to either D+ + O(3P) or D(2S) + O+(4S) final products. We show that the branching ratio of these dissociation channels is a direct measure of the key transition probabilities, specifically A3Π → X3Σ− → B3Σ−, and measure it as a function of energy above the dissociation limit for two specific states of OD+.

*The LBNL and JRML groups were supported by the U.S. Department of Energy (DOE), Office of Basic Energy Sciences, Division of Chemical Sciences, Biosciences and Geosciences under Contract No. DE-AC02-05CH11231 and DE-FG02-86ER13491, respectively.

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Presenters

  • Itzik Ben-Itzhak

    • Kansas State University
    • J.R. Macdonald Laboratory, Physics, Kansas State University
    • J.R. Macdonald Laboratory, Department of Physics, Kansas State University, Manhattan, KS 66506 USA

Authors

  • W. Iskandar

    • Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720 USA

  • Thomas N Rescigno

    • Lawrence Berkeley National Laboratory
    • Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720 USA

  • Z. L Streeter

    • Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720 USA

  • C. W McCurdy

    • Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720 USA

  • Robert R Lucchese

    • Lawrence Berkeley National Laboratory
    • LBL
    • Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720 USA

  • K. A Larsen

    • SLAC National Accelerator Laboratory
    • Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720 USA

  • Daniel S Slaughter

    • Lawrence Berkeley National Laboratory
    • Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720 USA

  • Th. Weber

    • Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720 USA

  • A. E Orel

    • Department of Chemical Engineering, University of California, Davis, CA 95616 USA

  • B. Griffin

    • Department of Physics, University of Nevada, Reno, NV 89557 USA

  • Joshua B Williams

    • University of Nevada, Reno
    • Department of Physics, University of Nevada, Reno, NV 89557 USA

  • Travis Severt

    • Kansas State University
    • J.R. Macdonald Laboratory, Department of Physics, Kansas State University, Manhattan, KS 66506 USA

  • B. Jochim

    • J.R. Macdonald Laboratory, Department of Physics, Kansas State University, Manhattan, KS 66506 USA

  • Itzik Ben-Itzhak

    • Kansas State University
    • J.R. Macdonald Laboratory, Physics, Kansas State University
    • J.R. Macdonald Laboratory, Department of Physics, Kansas State University, Manhattan, KS 66506 USA