Temperature Dependence of g Values for Aqueous Solutions Irradiated with 23 MeV 2H+ and 157 MeV 7Li3+ Ion Beams

The temperature ( T ) dependence of the g values for the radiolysis of water with 23 MeV 2 H + and 157 MeV 7 Li 3+ ion beams is reported. The results indicate that as the linear energy transfer characteristics of the radiation increase, (i) d( g (e aq - ))/d T decreases, (ii) d( g (H 2 ))/d T increases, (iii) d( g (OH))/d T remains constant, and (iv) d( g (H 2 O 2 ))/d T is approximately constant. These observations are qualitatively consistent with the kinetic−diffusion model of the spur/track. The g values for 2 MeV fission neutrons have been estimated from these ion beam results for the temperature range 25−300 °C.