title: OER and RBE of high energy neutron beams for growth inhibition in Vicia faba.
abstract: The radiobiologic characteristics of 15 MeV neutrons produced by the d + T reaction at the TNO of Rijswijk and of neutrons produced by the d(50) + Be and p(75) + Be reactions at the cyclotron Cyclone of Louvain-la- Neuve were compared. Growth inhibition in Vicia faba bean roots was used as biologic system. An OER value of 1.5 +/- 0.1 ws obtained for the neutron beams compared. The RBE of 15 MeV, d(50) + Be and p(75) + Be neutrons was found equal to 3.4 +/- 0.2, 3.2 +/- 0.2 and 2.9 +/- 0.3, respectively, relative to gamma rays, for a total (n + gamma) absorbed dose of 0.6 Gy.
mesh_terms: D007887:Fabaceae / Q000254:growth & development / Q000528:radiation effects*; D005214:Fast Neutrons; D005720:Gamma Rays; D009502:Neutrons; D010100:Oxygen; D010946:Plants, Medicinal; D012062:Relative Biological Effectiveness
chemical_list: D010100:Oxygen