Effects of linear energy transfer (LET) on the product yields of the radiolysis of water have been studied at length and explained satisfactorily by the diffusion theory developed by Magee and his co-workers. If similar discussions are assumed applicable to the other liquid systems than water, the more detailed mechanisms of the radiolyses must be obtained. Though relatively few papers have been published of the LET effects for the non-aqueous systems, some examples, that is, methanol, cyclohexane, cyclohexene, benzene and its derivatives, which were studied systematically to some extent, are reviewed. Special systems are also reviewed briefly.
