Numerical modeling of the dynamics of the cis-trans isomerization of retinalстатья
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Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
Местоположение издательства:Road Town, United Kingdom
Первая страница:293
Последняя страница:298
Аннотация:The dynamics of the photoisomerization of retinal under the action of ultrashort light pulses was studied using the method of wave packets within the framework of a two-level model with avoided crossing of the electronic terms. The time evolution of the populations of the electronic states was calculated; the results obtained were interpreted within the framework of the classical model. The reaction yield was calculated as a function of the parameters of the nonadiabatic interaction potential. Values of these parameters that provide coincidence with the observed experimental results were determined. It was demonstrated that the classical approximation qualitatively correctly describes the dynamics of motion of the system over electronic terms and the probability of the electronic transition in the region of avoided crossing. The effect of the parameters of the light pulse (duration and chirp) on the shape of the wave packet and isomerization yield was studied.