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The effects of vibrational coherence and vibrational relaxation on the pump-probe stimulated emission are theoretically studied on the basis of the perturbative density operator method and the transient linear susceptibility theory. The time-resolved profiles are simulated for the system with the...
Redox titrations of Q A , the first quinone electron acceptor, have been performed on Photosystem II (PS II) membranes which were either active or inactive in terms of oxygen evolution. The redox state of Q A was monitored by measuring the chlorophyll fluorescence yield. When titrations were done...