^(229)Ra的衰变纲图  

Decay Scheme of 229Ra

作　　者：沈水法[1] 袁双贵[1] 杨维凡[1] 方克明[1] 牟万统[1] 张学谦[1] 李宗伟[1] 钟纪泉[1] 郭天瑞[1] 陈展图[1] 

机构地区：[1]中国科学院近代物理研究所

出　　处：《高能物理与核物理》1997年第9期783-786,共4页High Energy Physics and Nuclear Physics

基　　金：中国科学院八五重大项目;国家自然科学基金

摘　　要：用１４ＭｅＶ中子轰击Ｔｈ靶，通过￣（２３２）Ｔｈ（ｎ，ａ）反应产生了￣（２２９）Ｒａ，由放射化学分离技术从被照靶物质中分离出￣（２２９）Ｒａ的活性，利用γ（Ｘ）谱学方法，首次观测到了属于￣（２２９）Ａｃ的能量为１４．５、１５．６、１８．８、２１．８．２２．５、４４．０、４７．５、５５．０、６３．０、６９．６、９３．６、９４．１．９８．５．１０２．２、１０４．５、１０６．１、１６１．１、１７１．５ｋｅＶ的１８条新衰变γ射线，并建议了￣（２２９）Ｒａ的部分衰变纲图。The 229ra has been produced in the 232 th(n,a)229Ra reaction by 14MeV neutronirradiation of natural Thorium. The 229Ra activities were separated from irradiatedtarget material by radiochemical separation technique. 18 new γ rays with energies14.5,15.6,18.8,21.8,22.5,44.0,47.5,55.0,63.0,69.6,93.6,94.1,98.5,102.2,104.5,106.1,161.171.5keV attributed to the 229Ac were observed for the first timeby usin γ(X) spectroscopic methods. A partial decay scheme of 229Ra was proposed.

关 键 词：衰变纲图 八极形变 转动带 镭229 

分 类 号：O571.34[理学—粒子物理与原子核物理]