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Affiliation of Author(s):材料科学工程学院
Teaching and Research Group:物理教研室
Journal:Journal of Radioanalytical and Nuclear Chemistry
Funded by:国家自然科学基金项目
Key Words:BNCT; thermalization efficiency; tungsten; fast neutron
Abstract:In boron neutron capture therapy (BNCT), the proportion of the fast neutron in the tumor (PFN) must be no more than 3%. If a D-T neutron generator is used as a thermal neutron source in BNCT, the moderator must be optimized to decrease the PFN. Based on the analysis of the theory, water, heavy water, polythene, graphite, lead and tungsten were used to moderate the fast neutrons. If the three-layer material is composed of a 4 cm thickness layer of tungsten, a 13 cm thickness layer of lead and a 23 cm thickness layer of heavy water, its thermalization efficiency (TE) is highest, which is increased by 191.5% than the maximum TE moderated by single-layer materials and by 19.3% than the maximum TE moderated by double-layer materials.
First Author:chengdaowen
Indexed by:Journal paper
Volume:292
Issue:3
Page Number:1
Number of Words:1
ISSN No.:0236-5731
Translation or Not:no
Date of Publication:2012-03-01