The temperature (T) dependence of the g values for the radiolysis of water with 23 MeV H-2(+) and 157 MeV Li-7(3+) ion beams is reported. The results indicate that as the linear energy transfer characteristics of the radiation increase, (i) d(g(e(aq)(-)))/dT decreases, (ii) d(g(H-2)/dT increases, (iii) d(g(OH))/dT remains constant, and (iv) d(g(H2O2))/dT 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 75-300 degrees C.