【摘 要】
：
Three laboratory reference standards of UBT-030,UBT-070,UBT-750 and a flow blank(F_Blank)were used as test samples for the first AMS measurement of isotopic rat
【机 构】
：
Department of Nuclear Physic,College of Physics Science and Technology, Guangxi University,College o
【出 处】
：
Annual Report of China Institute of Atomic Energy
论文部分内容阅读
Three laboratory reference standards of UBT-030,UBT-070,UBT-750 and a flow blank(F_Blank)were used as test samples for the first AMS measurement of isotopic ratios in nanogram level uranium samples.The results of 234,235,236U/238U ratios were obtained by absolute measurements,based on the count rates after corresponding background subtractions of 234,235,236,238U11+
Three laboratory reference standards of UBT-030, UBT-070, UBT-750 and a flow blank (F_Blank) were used as test samples for the first AMS measurement of isotopic ratios in nanogram level uranium samples. The results of 234,235,236 U / 238U ratios were obtained by absolute measurements, based on the count rates after corresponding subtractions of 234,235,236,238U11 +
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