PAN Qiang-yan1, YANG Wei-fan1, YUAN Shuang-gui1, LI Zong-wei1, MA Tao-tao1, GUO Jun-sheng1, LIU Ming-yi1, LIU Hong-ye1, XU Shu-wei1, GAN Zai-guo1, KONG Deng-ming2, QIAO Ji-min2, LUO Zi-hua2, ZHANG Mu-tian2, WANG Shu-hong2
1Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000
2Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100039
Evidence for Heavy Ion Emission of 230U
PAN Qiang-yan1;YANG Wei-fan1;YUAN Shuang-gui1;LI Zong-wei1;MA Tao-tao1;GUO Jun-sheng1;LIU Ming-yi1;LIU Hong-ye1;XU Shu-wei1;GAN Zai-guo1; KONG Deng-ming2;QIAO Ji-min2;LUO Zi-hua2;ZHANG Mu-tian2;WANG Shu-hong2
1Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000
2Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100039
Abstract： Radioisotope of 230Pa was synthesized by proton irradiation of ThO2 powder targets with thickness of about 2g/cm2. Pure 230Pa was extracted and deep purified from thorium and fission products by the radiochemical method. Thin 230Pa→230U sources were prepared for measuring the cluster decay of 230U. Two cases of decay via heavy ion emission, which were most probably for the neon decays of 230U, were detected by using solid-state track registration detectors. The preliminary branching ratio relative to a-decay comes out to be ( 1.3 ±0.8 ) 10-14.
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
. Evidence for Heavy Ion Emission of 230U[J]. 中国物理快报, 1999, 16(4): 251-252.
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
. Evidence for Heavy Ion Emission of 230U. Chin. Phys. Lett., 1999, 16(4): 251-252.
1999, Vol. 16 
