title: Estimation of RBEs of thermal neutrons and reactor beam in the thermal neutron field for biomedical purposes.
abstract: The radiation field and reactor beam were prepared to measure the RBE of thermal neutrons and reactor beam in Kyoto University Reactor (KUR). The RBE of reactor beam with low contamination of gamma ray (1.8 x 10(11) n cm-2R-1) and high Cd ratio (5000) on HeLa cells was 1.26 at the surviving fraction of 0.90, and the estimated RBE of thermal neutrons was 5.50 at the same surviving fraction.
mesh_terms: D002104:Cadmium; D006367:HeLa Cells; D006801:Humans; D009502:Neutrons; D012062:Relative Biological Effectiveness
chemical_list: D002104:Cadmium