Radiation-induced conductivity high pressure

The y-radiation-induced conductivity of n-hexane under high hydrostatic pressure was studied by Holroyd (1994) and by Holroyd, Chen et al. (1996). The free ion yield at T = 295 K, Gfi(E = 0), decreased from 0.14 at 1 bar to 0.1 at 2 kbar. Evaluation of the data by Equations 39 and 40 with a Gaussian distribution of separation distances showed that the product b x d (separation distance times density) is essentially constant with pressure. This finding complements the data of Schmidt and Allen (1970) (Section 5.6, Table 7), who found that b x d remained constant when the density was varied by change of temperature. 

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