Abstract
A theoretical analysis of Onsager's function is presented, which determines the probability that a pair of ions will escape initial recombination. In contradistinction to the calculations of Freeman, the isotropic distribution of the pair of ions is taken into account. The resulting expression for the probability has been verified experimentally by means of electrical conductivity measurements in irradiated n-hexane under high electric fields. The experimental results indicate that in the case of nondegassed n-hexane ionized by low-energy X-rays, the effective initial separation between the ions, at room temperature, equals approximately 1·2 × 10 −6 cm. The paper includes also the detailed discussion of the methods by means of which the mean ionization energy of liquid alkanes has been determined.
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