Ion Beam Pulse Radiolysis Study of Intratrack Reactions in Aqueous Solutions

摘要

The following results have been obtained in the present experiment. 1) A pulse radiolysis system using proton and He~(2+) beams with duration of 1 μs has been constructed and used in radiation chemical studies at the HIMAC facility. 2) Radical yields decrease with an increase in LET, and scavenger systems to be used as probes must be examined carefully for the possibility of secondary reactions. 3) The reliability of the dose evaluation in the present experiment was confirmed by the comparison of the results between steady-state and pulse irradiation experiments. In addition, the aqueous methyl viologen solution containing formate was proposed as a promising chemical dosimeter in pulse and steady-state irradiation with ion beams.