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 radiochem...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 method.Thin^(230)Pa→^(230)U sources were prepared for measuring the cluster decay of^(230)U.Two 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 detectors.The preliminary branching ratio relative to a-decay comes out to be(1.3±0.8)10^(-14).展开更多
基金Supported by the National Natural Science Foundation of China under Grant No.19405006the 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。
文摘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 method.Thin^(230)Pa→^(230)U sources were prepared for measuring the cluster decay of^(230)U.Two 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 detectors.The preliminary branching ratio relative to a-decay comes out to be(1.3±0.8)10^(-14).
