Employing Resonance-Enhanced Multi-Photon Dissociation for measuring the dissociation energy of LiO$^{\mathrm{-}}$

ORAL

Abstract

We have evaluated the dissociation energy of LiO$^{\mathrm{-}}$ through photo-fragmentation by measuring the kinetic energy release (KER) upon dissociation into Li$+$O$^{\mathrm{-}}$. Resonance-enhanced two-photon absorption was used to increase the rate of dissociating LiO$^{\mathrm{-}}$ by about two orders of magnitude over single-photon photodissociation. This REMPI-like process involves exciting LiO$^{\mathrm{-}}$ to an intermediate state from which photodissociation is more efficient. Using the measured KER distribution, we set a lower limit on the dissociation energy of 3.0$\pm$0.1 eV, which is 0.3 eV larger than the value based on theory.

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Authors

  • Ben Berry

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

  • Bethany Jochim

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

  • Peyman Feizollah

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

  • Kanaka Raju Pandiri

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

  • K. D. Carnes

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

  • B. D. Esry

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

  • Itzik Ben-Itzhak

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