Photofragment imaging from mass-selected ions using a reflectron mass spectrometer. II: Formation mechanism of MgF+ in the photodissociation of Mg+FCH3 complex

Kenichi Okutsu, Keijiro Ohshimo, Hiroshi Hoshino, Kiichirou Koyasu, Fuminori Misaizu

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

We have observed fragment-ion images by ultraviolet photodissociation of Mg+FCH3 complex using a reflectron time-of-flight mass spectrometer coupled with an imaging detector. Fourth harmonic of a Nd:YAG laser was used for excitation of Mg+FCH3 from 12A1 to 22A1 state, which has a main character corresponding to Mg+ 2P ← 2S transition. We observed images of MgF+ fragments and determined the kinetic energy release and angular distributions. Among the calculated potential energy curves of Mg+FCH3 along FC bond length, the 22A1 state was repulsive. The observed energy and angular distributions were consistent with fast MgF+ formation on the repulsive potential energy curve.

Original languageEnglish
Pages (from-to)57-61
Number of pages5
JournalChemical Physics Letters
Volume630
DOIs
Publication statusPublished - 2015 Apr 30

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

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