CAJ | 학술논문

在微型中子源反应堆中辐照75 mg仲钼酸铵20 min,冷却12 min,然后用α-安息香肟-乙酸乙酯在水相介质为0.8 mol/L HNO3、相比1∶1条件下,连续萃取2次分离出了无载体、放化纯的~(101)Tc样品.用HPGe γ探测器对306.8 keV γ射线采用位置接续法跟踪测量,分别用"平移法"、"迭代法"和"R-值法"进行数据处理,得到~(101)Tc的半衰期为(14.02±0.01) min(n=5),经检验数据可靠.
재미형중자원반응퇴중복조75 mg중목산안20 min,냉각12 min,연후용α-안식향우-을산을지재수상개질위0.8 mol/L HNO3、상비1∶1조건하,련속췌취2차분리출료무재체、방화순적~(101)Tc양품.용HPGe γ탐측기대306.8 keV γ사선채용위치접속법근종측량,분별용"평이법"、"질대법"화"R-치법"진행수거처리,득도~(101)Tc적반쇠기위(14.02±0.01) min(n=5),경검험수거가고.
75 mg (NH_4)_6Mo_7O_(24)·4H_2O solution was irradiated for 20 min in miniature neutron source reactor (MNSR) and cooled for 12 min. In the conditions of 0.8 mol/L HNO_3, phase ratio 1∶1, the solution of ~(101)Tc sample was extracted twice with α-benzoin oxime/ethyl acetate phase to remove ~(101)Mo and a radiochemically pure and carrier-free ~(101)Tc product was obtained. The half-life of ~(101)Tc was accurately measured with a HPGe γ-detector by following 306.8 keV γ-ray about 150 min, and processed the data by three methods, R-value method, iterative method and translation method. Five parallel measurments gave a half-life (14.02±0.01) min (n=5) for ~(101)Tc.