Channel competition in strong-field dissociation of a CS$^{+}$ target

POSTER

Abstract

Using a coincidence 3-D momentum imaging technique, we study ultrafast laser-induced dissociation of a CS$^{+}$ ion beam. Over a wide laser intensity range, from 10$^{10}$ to 10$^{16}$ W/cm$^{2}$, we find clear alternation in the dominance of the C$^{+}+$ S and C $+$ S$^{+}$ channels with intensity. Moreover, low-kinetic energy release (KER) ($\le $1 eV) dissociation in both channels at the lower end of the intensity range suggests the intriguing possibility of photodissociating metastable states being involved. Utilizing an estimate of the initial vibrational population, measured KER and angular distribution spectra, and the molecular ion's calculated electronic structure, we examine the dynamics underlying the observed intensity-dependent channel competition.

*Supported by the Chemical Sciences, Geosciences and Biosciences Division, Office of Science, U.S. Department of Energy. BJ is also supported by the Department of Energy Office of Science Graduate Fellowship Program (DOE SCGF)-grant \#DE-AC05-06OR23100.

Authors

  • Bethany Jochim

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

  • K.J. Betsch

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

  • M. Zohrabi

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

  • U. Ablikim

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

  • Travis Severt

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

  • Ben Berry

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

  • A.M. Summers

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

  • K. Carnes

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

  • I. Ben-Itzhak

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