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Photofragment ion imaging from mass-selected Mg+BrCH3 complex: Dissociation mechanism following photoinduced charge transfer.
- Source :
-
Journal of Chemical Physics . 2017, Vol. 146 Issue 2, p1-6. 6p. 1 Color Photograph, 2 Diagrams, 1 Chart, 4 Graphs. - Publication Year :
- 2017
-
Abstract
- We have observed fragment ion images produced by ultraviolet photodissociation of Mg+BrCH3 complex ions using a reflectron time-of-flight mass spectrometer combined with an imaging detector. The BrCH3+ fragment ion was produced after the 266-nm excitation of Mg+BrCH3. In the image of the BrCH3+ ions, a split distribution was observed parallel to the polarization direction of the photolysis laser. In calculated potential energy curves, we found a repulsive potential correlated with a dissociation limit of Mg + BrCH3+: The calculation results indicate that the dissociation and the charge transfer occurred via non-adiabatic process after the 52A'←12A' photoexcitation. The obtained energy and angular distributions of BrCH3+ photofragments were consistent with the fast BrCH3+ formation process on the repulsive potential energy curve. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00219606
- Volume :
- 146
- Issue :
- 2
- Database :
- Academic Search Index
- Journal :
- Journal of Chemical Physics
- Publication Type :
- Academic Journal
- Accession number :
- 120762220
- Full Text :
- https://doi.org/10.1063/1.4973386