Multi-Ion Coincidence Measurements of Methyl Chloride Following Photofragmentation Near the Chlorine K Edge

Authors

D. L. Hansen, University of Nevada, Las VegasFollow
J. Cotter, University of Nevada, Reno
G. R. Fisher, Lawrence Berkeley National Laboratory
K. T. Leung, University of WaterlooFollow
R. Martin, University of Nevada, Las VegasFollow
Paul Neill, University of Nevada, RenoFollow
Rupert C. Perera, Lawrence Berkeley National LaboratoryFollow
Marc Simon, Universite Paris-SudFollow
Y. Uehara, Mitsubishi Electric Corporation
B. Vanderford, University of Nevada, Las Vegas
S. B. Whitfield, University of Wisconsin - Eau ClaireFollow
Dennis W. Lindle, University of Nevada, Las VegasFollow

Document Type

Article

Publication Date

1999

Publication Title

Journal of Physics B: Atomic, Molecular and Optical Physics

Volume

32

First page number:

2629

Last page number:

2647

Abstract

Relaxation dynamics of CH₃Cl following core-shell photoexcitation in the neighbourhood of the chlorine K-edge (≈2:8 keV) were studied via multi-ion coincidence measurements using a time-of-flight mass spectrometer. The data provide evidence for sequential fragmentation moderated by Coulombic interactions among the fragments. The sequential nature of the fragmentation indicates that chemical forces, especially between the carbon and chlorine atoms, are dominant in determining the kinematics of the fragmentation. This is especially true on resonance where fast dissociation is observed following electron excitations to the 8a1 antibonding orbital.

Keywords

Electronic excitation; Fragmentation reactions; Methyl Chloride

Disciplines

Analytical Chemistry | Atomic, Molecular and Optical Physics | Biological and Chemical Physics | Elementary Particles and Fields and String Theory | Physical Chemistry

Language

English

Permissions

Use Find in Your Library, contact the author, or use interlibrary loan to garner a copy of the article. Publisher copyright policy allows author to archive post-print (author’s final manuscript). When post-print is available or publisher policy changes, the article will be deposited

Repository Citation

Hansen, D. L., Cotter, J., Fisher, G. R., Leung, K. T., Martin, R., Neill, P., Perera, R. C., Simon, M., Uehara, Y., Vanderford, B., Whitfield, S. B., Lindle, D. W. (1999). Multi-Ion Coincidence Measurements of Methyl Chloride Following Photofragmentation Near the Chlorine K Edge. Journal of Physics B: Atomic, Molecular and Optical Physics, 32 2629-2647.