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176,178Os新低位激发态的识别

Identification of New Low-lying Excited States in 176,178Os

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【作者】 王华磊; 张玉虎; 周小红; 郭应祥; 雷祥国; 徐树威; 谢元祥; 郑勇; 柳敏良; 邢烨炳; 谢成营; 宋立涛; 郭文涛; T.Hayakawa; M.Oshima; Y.Toh; J.Katakura; Y.Hatssukawa; M.Matsuda; N.Shinohara; T.Ishii; H.Kusakari; M.Sugawara; T.Komatsubara;

【Author】 WANG Hua-lei~(1,2),ZHANG Yu-hu~(1,2),ZHOU Xiao-hong~(1) ,GUO Ying-xiang~(1),LEI Xiang-guo~(1),XU Shu-wei~(1), XIE Yuan-xiang~(1),ZHENG Yong~(1), LIU Min-liang~(1),XING Ye-bing~(1),XIE Cheng-ying~(1),SONG Li-tao~(1),GUO Wen-tao~(1),T.Hayakawa~(3),M.Oshima~(3),Y.Toh~(3), J.Katakura~(3),Y.Hatssukawa~(3),M.Matsuda~(3),N.Shinohara~(3),T.Ishii~(3),H.Kusakari~(4),M.Sugawara~(5),T.Komatsubara~(6)(1 Institute of Modern Physics,Chinese Academy of Sciences,Lanzhou 730000,China;2 Graduate School of Chinese Academy of Sciences,Beijing 100049,China;3 Japan Atomic Energy Research Institute,Tokai,Ibaraki 319-1195,Japan;4 Chiba University,Inage-ku,Chiba 263-8512,Japan;5 Chiba Institute of Technology,Narashino Chiba 275-0023,Japan;6 Institute of Physics and Tandem Accelerator Center,University of Tsukuba, Ibaraki 305-0006,Japan)

【机构】 中国科学院近代物理研究所; Japan Atomic Energy Research Institute; Chiba University Inage-ku; Chiba263-8512; Japan; Chiba Institute of Technology; Narashino Chiba275-0023; Institute of Physics and Tandem Accelerator Center; University of Tsukuba; Ibaraki305-0006; 甘肃兰州730000中国科学院研究生院; 北京100049; 甘肃兰州730000; Tokai; Ibaraki319-1195;

【摘要】 利用在束实验产生具有β+/EC衰变性质核素176,178Ir,分析了在束实验条件下获得的γ-γ符合数据,识别出了176Os的4条新能级和13条新γ跃迁、178Os的5条新能级和14条新γ跃迁。籍助氦喷嘴快速带传输系统,进一步对176Ir的β+/EC衰变进行了测量,在确认在束测量新γ射线的同时建议了176Ir的一个低自旋同核异能态。通过两准粒子耦合的半经验计算,建议了176,178Ir基态及同核异能态的组态。

【Abstract】 The γ rays following the β+/EC decay of 176,178Ir nuclei have been investigated using in-beamγ-ray experiment.A total of 4 new levels,13 new γ transitions of 176Os and 5 new levels,14 new γ transitions of 178Os were identified.In addition,with the aid of a helium-jet recoil fast tape transport system,the(β+/EC) decay of 176Ir was further studied,the above new γ rays were proved and an isomer was proposed in 176Ir.By the semiempirical calculations of two-quasiparticle intrinsic states of odd-odd nuclei,the configurations of ground states and isomeric states were also proposed for 176,178Ir.

【基金】 国家自然科学基金资助项目(10025525,10375077,10221003);国家重点基础研究发展规划资助项目(TG2000077400);中国科学院基金资助项目~~
  • 【文献出处】 原子核物理评论 ,Nuclear Physics Review , 编辑部邮箱 ,2006年01期
  • 【分类号】O571.2
  • 【下载频次】39
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