On a simple reaction mechanism for the collision-induced dissociation He + Li2(B1Πu) → He + Li(2 2S) + Li(2 2P) |
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Authors: | D Poppe WN Whitton |
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Institution: | Iwan N. Stranski-Institut für Physikalische und Theoretische Chemie der TU Berlin, Ernst-Reuter-Platz 7, 1000 Berlin 10, West Germany |
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Abstract: | A simple reaction mechanism is suggested for the dissociation of electronically excited Li2(B1Πu) in collision with rare-gas atoms. Experimental rate constants for dissociation of Li2 in specific vibrational—rotational levels (ν1J) show an unexpected behaviour as a function of the initial molecular energy and angular momentum. We propose that raction proceeds by a transition to the 1Πg state of Li2. This may dissociate more readily since it is more weakly bound and has a larger equilibrium distance than the 1Πu state. |
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