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在兰州的重离子加速器上用 2 6Mg离子束轰击 2 43 Am靶 ,产生了新同位素 2 65Bh .通过观测新同位素 2 65Bh和它的已知子核 2 61Db和 2 57Lr之间的α衰变的关联 ,实现了对新核素的鉴别 .实验中使用了一套新建立的具有数个探测器对的转轮收集探测系统 .将该系统用于特殊的母 -子核搜索模式 ,从而大大减少了本底 .共测得了 8个 2 65Bh的α衰变关联事件 ;同时 4个已知核 2 64Bh的衰变关联事件也被鉴别出来 .实验测得 2 65Bh的α衰变能量为 (9.2 4± 0 .0 5 )MeV ,半衰期为 0 .94 + 0 .70-0 .3 1s .
The bombardment of 233 A target with a 26Mg ion beam on a heavy ion accelerator in Lanzhou resulted in a new isotope of 65Bh. By observing the association of the new decay at its 65Bh with its known nucleus, 2Di and 57Lr, Which has realized the identification of new nuclides.The experiment uses a newly established wheel collection and detection system with several detector pairs.The system is used in a special mother-child search mode, thus greatly reducing the cost At the end of the experiment, 8 2 65Bh α-decay events were detected and at the same time, 4 64Bh known decay events were also identified.Experiments found that 2 65Bh α-decay energy was (9.2 4 ± 0.55 ) MeV, half-life of 0.94 +0 .70-0 .3 1s.