Interstate coupling statistical limit

It is interesting to note the formal similarity, but the conceptual difference, of results (176) and (177) and those derived by Bixon and Jortner (1968) in their pioneering study of radiationless molecular transitions in the statistical limit. They used the previously mentioned uniform model (see Section II,E,l,b), with the assumptions of equal level spacings (5e, = D) and equal interstate couplings (v, = v). If y/D 1, expression (173b) becomes... 

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