[Mobility of photo-generated vacuoles in layers of chlorophyll a]

The method of crystalline counter was used for investigating the movement of photogenerated holes in chlorophyll a layers. It has been shown that kinetics of the increase of tension impulses U(t, V) contains two phases: the initial phase of fast increment of impulses for the time (2 divided by 10) x 10(-7) s and the phase of successive slowed down accumulation of the charge. The value of the signal in the initial phase increases almost linearly with t increase. The time of increment of the initial phase ti linearly depends on 1/V, where V--tension applied to the sample. It is concluded from the analysis of these data that the initial phase of the curves U(t, V) is conditioned by the transit of some photogenerated holes up to the rear electrode without their seizure with deep traps within the layer. From the changes of ti mobility of holes is calculated: mu = (1.8--5.0) x 10(-6) M2 . b-1 . s-1. The phase of slow charge accumulation is explained by the seizure of the holes by surface traps and their release after the time t approximately greater than ti. Mean time of holes presence in small traps in the layer volume t congruent to (1--2) x 10(-7) s. is evaluated.