Evaluation of D(d,n)³He reaction neutron source models for BNCT irradiation system design

Evaluation of D(d,n) 3 He reaction neutron source models for BNCT irradiation system design 1 corresp first-author Corresponding author. E-mail: zeyao@lzu.edu.cn Corresponding author. E-mail: zeyao@lzu.edu.cn zeyao@lzu.edu.cn 1 2 2 School of Nuclear Science and Technology, Lanzhou University, Lanzhou 730000, China; School of Nuclear Science and Technology, Lanzhou University, Lanzhou 730000, China; Research Reactor Institute, Kyoto University, Osaka 590-0494, Japan Research Reactor Institute, Kyoto University, Osaka 590-0494, Japan A mathematical method was developed to calculate the yield, energy spectrum and angular distribution of neutrons from D(d,n) 3 He (D-D) reaction in a thick deuterium-titanium target for incident deuterons in energies lower than 1.0MeV. The data of energy spectrum and angular distribution were applied to set up the neutron source model for the beam-shaping-assembly (BSA) design of Boron-Neutron-Capture-Therapy (BNCT) using MCNP-4C code. Three cases of D-D neutron source corresponding to incident deuteron energy of 1000, 400 and 150 keV were investigated. The neutron beam characteristics were compared with the model of a 2.45 MeV mono-energetic and isotropic neutron source using an example BSA designed for BNCT irradiation. The results show significant differences in the neutron beam characteristics, particularly the fast neutron component and fast neutron dose in air, between the non-isotropic neutron source model and the 2.5 MeV mono-energetic and isotropic neutron source model. D(d;n) 3 He reaction neutron source Neutron energy spectrum Neutron angular distribution Neutron beam characteristics in air BNCT References Reijonen J , Gicquel F , Hahto S K , et al . Applied Radiation and Isotopes , 2005 , 63 : 757 . Applied Radiation and Isotopes Durisi E , Study of a DD compact neutron generator for BNCT, PhD Thesis . Torino University , Italy , 2005 . Study of a DD compact neutron generator for BNCT, PhD Thesis Koivunoro H , Lou T-P , Reijonen J , et al . Proceeding of 10th International Congress on Neutron Capture Therapy . Essen, Germany , September 8-13, 2002 : 313 . Koivunoro H , Bleuel D L , Nastasi U , et al . Applied Radiation and Isotopes , 2004 , 61 : 853 . Applied Radiation and Isotopes Los Alamos National Laboratory , MCNP4C-Monte Carlo N-Particle Transport Code System , 2000 . MCNP4C-Monte Carlo N-Particle Transport Code System Liskien H , Paulsen A . Nuclear Data Tables , 1973 , 11 : 569 . Nuclear Data Tables Ziegler J F . Nucl Instr Meth Phys Res , 2004 , B 219-220 : 1027 . Nucl Instr Meth Phys Res Malbrough D J , Brice D K , Cowgill D F , et al . Nucl Instr Meth Phys Res , 1987 , B 28 : 459 . Nucl Instr Meth Phys Res ICRU Report-44 , 1989 : 119 . ICRU Report-44 10.1016/S1001-8042(08)60003-2 O571.52,O571.53 2007-07-01 2007-12-20 2021-01-19 2007 Nuclear Science and Techniques 06 18