Evidence for Heavy Ion Emission of^(230)U

作     者：PAN Qiang-yan YANG Wei-fan YUAN Shuang-gui LI Zong-wei MA Tao-tao GUO Jun-sheng LIU Ming-yi LIU Hong-ye XU Shu-wei GAN Zai-guo KONG Deng-ming QIAO Ji-min LUO Zi-hua ZHANG Mu-tian WANG Shu-hong 潘强岩;杨维凡;袁双贵;李宗伟;马桃桃;郭俊盛;刘明义;刘洪业;徐树威;甘再国;孔登明;乔际民;罗紫华;张沐天;王书鸿

作者机构：Institute of Modern PhysicsChinese Academy of SciencesLanzhou 730000 Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100039 

出 版 物：《Chinese Physics Letters》 (中国物理快报（英文版）)

年 卷 期：1999年第16卷第4期

页      面：251-252页

核心收录：

学科分类：07[理学] 070202[理学-粒子物理与原子核物理] 0702[理学-物理学] 

基　　金：Supported by the National Natural Science Foundation of China under Grant No.19405006 the Foundation of the Chinese Academy of Sciences for the researcher returned back from abroad,and the Ninth Five-years Great Project of the Chinese Academy of Sciences 

主　　题：method. decay branching 

摘      要：Radioisotope of^(230)Pa was synthesized by proton irradiation of ThO_(2) powder targets with thickness of about 2g/cm^(2).Pure^(230)Pa was extracted and deep purified from thorium and fission products by the radiochemical ***^(230)Pa→^(230)U sources were prepared for measuring the cluster decay of^(230)*** cases of decay via heavy ion emission,which were most probably for the neon decays of^(230)U,were detected by using solid-state track registration *** preliminary branching ratio relative to a-decay comes out to be(1.3±0.8)10^(-14).