A pairs over recombination rate constants

1 Distribution of the P700[ -A pairs over recombination rate constants 

Assuming that the distribution of pairs over the values of the parameter rj (or, which is the same, over the values of the recombination rate constant) at the initial time t = 0 is described by a function F(rj), for the total number of pairs, n(t), at time t, we have, by analogy with eqn. (3) of Chap. 4 

If the distribution of pairs over // values is of a rectangular type then, for observation times, t9 meeting the condition 

It is interesting to note that, in the temperature range 80-160 K the initial slope of the kinetic curves in coordinates n(t) vs. log is independent of temperature. Hence, in this temperature range, the observed logarithmic or close to logarithmic character of the P700+ decay kinetics cannot be due to a distribution with respect to the values of the activation energy because, in the case of such a distribution, the slope of kinetic curves would have a value of 

The activation energy of the decay of P700+ in the range 80-160 K was found from the data of Fig. 8 using eqn. (5). For the ratio of the current concentration of pairs, n(t) to their concentration at time 0 one can readily obtain from eqn. (5), by analogy with eqn. (9) of Chap. 3 

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