Production of a fluorescence probe in ion-beam radiolysis of aqueous coumarin-3-carboxylic acid solution—2: Effects of nuclear fragmentation and its simulation with PHITS

摘要

The G(OH) values in aqueous coumarin-3-carboxylic-acid (3-CCA) solutions irradiated with ~(12)c~(6+) beams having the energies of 135, 290 and 400 MeV/u were measured by a fluorescent method around the Bragg peak, with 0.6 mm intervals, and quartz cells of 1 cm optical lengths, at the Heavy Ion Medical Accelerator in Chiba, National Institute of Radiological Sciences (N1RS). For each ion, the G(OH) has been calculated as a function of dose average LET and position. The calculated results have been compared to measurements, and the results, reproducibility and reliability of the calculations are discussed in the paper.