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89Ru的β缓发质子衰变性质

SCIENCE IN CHINA (SERIES A)(2000)

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Abstract
藉助氦喷嘴带传输系统,采用"p-γ"符合的鉴别原理,成功地合成与鉴别了58Ni(36Ar, 2p3n)反应产生的核素89Ru, 并研究了它的β缓发质子衰变性质.实验给出89Ru的衰变半衰期为(1.2±0.2) s, 测定了它的β缓发质子能谱,提取出了89Ru经缓发质子衰变布居到子核88Mo的2+和4+态的相对终态分支比(100∶6).通过与统计模型计算结果进行对比,初步指定了89Ru基态的自旋-宇称(5/2+或7/2±)和质量过剩(-59.5 MeV).
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