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The binding probability for an initially bound molecule located inside the reaction area at r0 = 1. The figure shows the time dependence of the binding probability for different values of the intrinsic dissociation constant κd = 0.05, 0.5, 2. The other parameters are a = 1.5, D = 0.75, κr = 5. The solid lines are obtained from the analytical expression for Q(t|r0, *).4 The dashed lines refer to the long-time approximation (Eq. (127)).
