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报道了利用兰州重离子研究装置提供的26Mg重离子束流轰击243Am靶产生和鉴别已知超重核素266Bh的实验结果。利用转轮收集探测装置依靠母子核遗传关系通过观测Bh同位素与其子核Db和Lr之间的α-α关联事件来鉴别266Bh。实验中观测到266Bh的α能量为(9.03±0.08)MeV,与日本理化学研究所在合成113号元素中第一个衰变链中观测到266Bh的α能量为9.07 MeV相近。266Bh的半衰期为0.66+-00..5269s,从实验得到的Qα也符合Z=107的Qα随中子数变化的系统性。
The experimental results of producing and identifying 266Bh, a known super - heavy species, by bombarding 243Am target with 26Mg heavy ion beam provided by Lanzhou Heavy Ion Research Facility were reported. 266Bh was identified by observing the α-α association events between Bh isotopes and its daughter nuclei Db and Lr by using the collection and detection device of the recuperator. It was observed that the α energy of 266Bh was (9.03 ± 0.08) MeV, which was similar to that of 266Bh observed in the first decay chain synthesized by the Japan Institute of Science and Technology at 9.07 MeV. The half-life of 266Bh is 0.66 + -00..5269s. The Qα obtained from the experiment is also consistent with the systematic Qα variation with neutron number of Z = 107.