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.
出处
《高能物理与核物理》
EI
CSCD
北大核心
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
关键词
衰变纲图
八极形变
转动带
镭229
chemical separation, decay scheme, octupole deformation, rotationalband.
