@article{oai:repo.qst.go.jp:00079808, author = {Ogawara, Ryo and Kusumoto, Tamon and Kobayashi, Alisa and Konishi, Teruaki and Hamano, Tsuyoshi and Kodaira, Satoshi and Ryo, Ogawara and Tamon, Kusumoto and Alisa, Kobayashi and Teruaki, Konishi and Tsuyoshi, Hamano and Satoshi, Kodaira}, journal = {Radiation Physics and Chemistry}, month = {Apr}, note = {We proposed a depth-intensity curve discrimination (DCD) method for assessing absorbed dose contributions of hydroxyl radicals (HO·) due to thermal neutrons, fast neutrons, and gamma rays in accelerator-based mixedradiation fields, that are relevant to boron neutron capture therapy (BNCT). The HO· yields of thermal neutrons, fast neutrons, and gamma-rays measured by coumarin-3-carboxylic acid solutions were discriminately evaluated using depth-intensity curves of their radiations and maximum likelihood-expectation maximization algorithm. The discrimination accuracies of the three types of radiation were 2.8%, 4.2%, and 1.0%, respectively. We demonstrated that the DCD method is appropriate to determine absorbed dose contributions of HO· in complex accelerator-based neutron fields for BNCT.}, title = {Discrimination of hydroxyl radical yields due to thermal neutrons, fast neutrons, and gamma rays in accelerator-based neutron fields}, volume = {173}, year = {2020} }