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马 飞, 周小红, #, 郑勇, 徐树威, 谢元祥, 陈亮, 张玉虎, 李占奎, 强赟华, 雷祥国, 郭应祥, 郭松, 丁兵, 王海霞, 李广顺, 周厚兵. 145Er的β延发质子衰变性质研究[J]. 原子核物理评论, 2010, 27(3): 252-256. doi: 10.11804/NuclPhysRev.27.03.252
引用本文: 马 飞, 周小红, #, 郑勇, 徐树威, 谢元祥, 陈亮, 张玉虎, 李占奎, 强赟华, 雷祥国, 郭应祥, 郭松, 丁兵, 王海霞, 李广顺, 周厚兵. 145Er的β延发质子衰变性质研究[J]. 原子核物理评论, 2010, 27(3): 252-256. doi: 10.11804/NuclPhysRev.27.03.252
MA Fei, ZHOU Xiao-hong, #, ZHENG Yong, XU Shu-wei, XIE Yuan-xiang, CHEN Liang, ZHANG Yu-hu, LI Zhan-kui, QIANG Yun-hua, LEI Xiang-guo, GUO Ying-xiang, GUO Song, DING Bing, WANG Hai-xia, LI Guang-shun, ZHOU Hou-bing. Properties of βdelayed Proton Decay of 145Er[J]. Nuclear Physics Review, 2010, 27(3): 252-256. doi: 10.11804/NuclPhysRev.27.03.252
Citation: MA Fei, ZHOU Xiao-hong, #, ZHENG Yong, XU Shu-wei, XIE Yuan-xiang, CHEN Liang, ZHANG Yu-hu, LI Zhan-kui, QIANG Yun-hua, LEI Xiang-guo, GUO Ying-xiang, GUO Song, DING Bing, WANG Hai-xia, LI Guang-shun, ZHOU Hou-bing. Properties of βdelayed Proton Decay of 145Er[J]. Nuclear Physics Review, 2010, 27(3): 252-256. doi: 10.11804/NuclPhysRev.27.03.252

145Er的β延发质子衰变性质研究

doi: 10.11804/NuclPhysRev.27.03.252

Properties of βdelayed Proton Decay of 145Er

  • 摘要: 通过92Mo(58Ni, 2p3n)熔合蒸发反应生成了非常缺中子核145Er。利用氦喷嘴带传输系统把研究目标核传输到低本底测量站, 进行了质子γ符合测量, 得到了不受同量异位素干扰的145Er的β延发质子谱。经过仔细分析与延发质子符合的γ谱, 发现了145Er的11/2-同核异能态具有β延发质子衰变性质。经拟合退激144Dy不同激发态γ跃迁的衰变曲线, 得出145Er的1/2+基态和11/2-同核异能态的半衰期分别为(1.6±0.6)和(0.6±0.1) s。最后, 简单介绍了中重质量区缺中子新核素的合成及衰变研究计划。The neutrondeficient isotope 145Er was produced via the fusionevaporation reaction 92Mo(58Ni, 2p3n). The reaction products were transported to a low background counting area using a Hejet tape transport system, and protonγ coincidence measurements were carried out. Based on the analysis of γ transitions in coincidence with βdelayed protons, the βdelayed proton decay of an νh11/2 isomer in 145Er was proposed. By fitting the decay curves of the γ transitions depopulating the lowlying states in 144Dy, the halflives of the groundstate and the νh11/2 isomeric state in 145Er were deduced to be (1.6±0.6) and (0.6±0.1) s, respectively. An experimental plan to synthesize new βdelayed proton precursors in the mediumheavy mass region has been presented.
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  • 收稿日期:  1900-01-01
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145Er的β延发质子衰变性质研究

doi: 10.11804/NuclPhysRev.27.03.252

摘要: 通过92Mo(58Ni, 2p3n)熔合蒸发反应生成了非常缺中子核145Er。利用氦喷嘴带传输系统把研究目标核传输到低本底测量站, 进行了质子γ符合测量, 得到了不受同量异位素干扰的145Er的β延发质子谱。经过仔细分析与延发质子符合的γ谱, 发现了145Er的11/2-同核异能态具有β延发质子衰变性质。经拟合退激144Dy不同激发态γ跃迁的衰变曲线, 得出145Er的1/2+基态和11/2-同核异能态的半衰期分别为(1.6±0.6)和(0.6±0.1) s。最后, 简单介绍了中重质量区缺中子新核素的合成及衰变研究计划。The neutrondeficient isotope 145Er was produced via the fusionevaporation reaction 92Mo(58Ni, 2p3n). The reaction products were transported to a low background counting area using a Hejet tape transport system, and protonγ coincidence measurements were carried out. Based on the analysis of γ transitions in coincidence with βdelayed protons, the βdelayed proton decay of an νh11/2 isomer in 145Er was proposed. By fitting the decay curves of the γ transitions depopulating the lowlying states in 144Dy, the halflives of the groundstate and the νh11/2 isomeric state in 145Er were deduced to be (1.6±0.6) and (0.6±0.1) s, respectively. An experimental plan to synthesize new βdelayed proton precursors in the mediumheavy mass region has been presented.

English Abstract

马 飞, 周小红, #, 郑勇, 徐树威, 谢元祥, 陈亮, 张玉虎, 李占奎, 强赟华, 雷祥国, 郭应祥, 郭松, 丁兵, 王海霞, 李广顺, 周厚兵. 145Er的β延发质子衰变性质研究[J]. 原子核物理评论, 2010, 27(3): 252-256. doi: 10.11804/NuclPhysRev.27.03.252
引用本文: 马 飞, 周小红, #, 郑勇, 徐树威, 谢元祥, 陈亮, 张玉虎, 李占奎, 强赟华, 雷祥国, 郭应祥, 郭松, 丁兵, 王海霞, 李广顺, 周厚兵. 145Er的β延发质子衰变性质研究[J]. 原子核物理评论, 2010, 27(3): 252-256. doi: 10.11804/NuclPhysRev.27.03.252
MA Fei, ZHOU Xiao-hong, #, ZHENG Yong, XU Shu-wei, XIE Yuan-xiang, CHEN Liang, ZHANG Yu-hu, LI Zhan-kui, QIANG Yun-hua, LEI Xiang-guo, GUO Ying-xiang, GUO Song, DING Bing, WANG Hai-xia, LI Guang-shun, ZHOU Hou-bing. Properties of βdelayed Proton Decay of 145Er[J]. Nuclear Physics Review, 2010, 27(3): 252-256. doi: 10.11804/NuclPhysRev.27.03.252
Citation: MA Fei, ZHOU Xiao-hong, #, ZHENG Yong, XU Shu-wei, XIE Yuan-xiang, CHEN Liang, ZHANG Yu-hu, LI Zhan-kui, QIANG Yun-hua, LEI Xiang-guo, GUO Ying-xiang, GUO Song, DING Bing, WANG Hai-xia, LI Guang-shun, ZHOU Hou-bing. Properties of βdelayed Proton Decay of 145Er[J]. Nuclear Physics Review, 2010, 27(3): 252-256. doi: 10.11804/NuclPhysRev.27.03.252

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