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.
ASJC Scopus subject areas
- Physics and Astronomy(all)
- Physical and Theoretical Chemistry