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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 targets 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 events 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 have 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.