Abstract
In this work, results on the Ba⋯ FCH 3+hν→ BaF ( Ba ∗)+ CH 3 ( CH 3 F) reaction obtained under high laser field conditions are reported. We have found that the two-photodissociation channel yields, i.e. the reactive BaF and non-reactive Ba ∗ products, exhibited opposite behaviour depending upon the laser fluence. Whereas the BaF yield rises as the laser fluence is increased, the Ba ∗ yield decreases over the same laser fluence range. In other words, the product ( Ba ∗) /(BaF) branching ratio changes significantly from low to high laser fluence in such a way that the (photoinitiated) Ba⋯FCH 3→BaF+CH 3 reaction may be controlled by changing the intensity of the excitation laser field.
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