title: The optimization study of Bonner sphere in the epi-thermal neutron irradiation field for BNCT.
abstract: The optimization study on the Bonner sphere in the epi-thermal neutron irradiation field for BNCT was done for the moderator material, moderator size, and activation foils as a neutron detector in the sphere. The saturated activity for the activation foil was obtained from the calculated response, and the effective energy range for each Bonner sphere was determined from the saturated activity. We can see that boric acid solution moderator is suitable for the spectrum measurement of a epi-thermal neutron irradiation field.
authors.affiliation: Department of Nuclear Engineering, Kyoto University, Yoshida Honmachi, Sakyo-ku, Kyoto, Japan. haruaki@physics.mbox.media.kyoto-u.ac.jp
authors.forename: H
authors.initials: H
authors.lastname: Ueda
authors.forename: H
authors.initials: H
authors.lastname: Tanaka
authors.forename: A
authors.initials: A
authors.lastname: Maruhashi
authors.forename: K
authors.initials: K
authors.lastname: Ono
authors.forename: Y
authors.initials: Y
authors.lastname: Sakurai
mesh_terms: D001888:Boric Acids / Q000737:chemistry; D016754:Boron Neutron Capture Therapy / Q000295:instrumentation*; D009502:Neutrons; D012996:Solutions
chemical_list: D001888:Boric Acids; D012996:Solutions; C032688:boric acid