摘要
The 230Ra has been produced via multinucleon transfer and dissipative fragmentation of heavy target in the 60 MeV/u 18O ion reaction with natural thorium. The radium was radiochemically separated from irradiated thorium targets. 230Ac was obtained by 230Ra β-→230Ac. Thin Ra sources were prepared for observing fission fragments from β-delayed fission of 230Ac. The sources were exposed to the mica fission track detectors and measured by a HPGe γ detector. The two fission events were obtained and could been assigned to the β-delayed fission of 230Ac. The β-delayed fission probability of 230Ac was determined to be (1.19±0.85)×10-8.
The 230Ra has been produced via multinucleon transfer and dissipative fragmentation of heavy target in the 60 MeV/u 18O ion reaction with natural thorium. The radium was radiochemically separated from irradiated thorium targets. 230Ac was obtained by 230Ra β-→230Ac. Thin Ra sources were prepared for observing fission fragments from β-delayed fission of 230Ac. The sources were exposed to the mica fission track detectors and measured by a HPGe γ detector. The two fission events were obtained and could been assigned to the β-delayed fission of 230Ac. The β-delayed fission probability of 230Ac was determined to be (1.19±0.85)×10-8.
基金
Supported by the National Natural Science Foundation of China
Major State Basic Research Development Program,
Chinese Aca
关键词
Β衰变
多核子跃迁反应
辐射化学分离
β-delayed fission, Multinucleon transfer reaction, Dissipative fragmentation of heavy target, Radiochemical separation
