THE 1ST DETECTION OF NATURALLY-OCCURRING U-236 WITH ACCELERATOR MASS-SPECTROMETRY
THE 1ST DETECTION OF NATURALLY-OCCURRING U-236 WITH ACCELERATOR MASS-SPECTROMETRY
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DOI：
10.1016/0168-583x(94)96014-3
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发表时间：
1994-06-01
影响因子：
1.3
通讯作者：
LITHERLAND, AE
中科院分区：
文献类型：
--
作者：
ZHAO, XL;NADEAU, MJ;LITHERLAND, AE
Iso微量重元素AMS系统已成功地用于加拿大萨斯喀彻温省雪茄湖铀矿样品中自然存在的铀236(U-236/U-238=(5.6+/-1.5)x 10(-10))的检测。这一铀-236水平与之前声称的已加工铀矿样品的水平一致(D.J.Rokop，D.N.Metta和C.M.Stevens，Int.J.质谱学。离子物理。8(1972)259[1])，与沥青铀矿中Pu-239的含量一致(W.A.Myers和M.Lindner，J.Inorg.核子。化学。33(1971)3233[2])。这项实验说明了一个小型串联AMS系统分析放线系元素，特别是U-236的一般能力。结果表明，目前该系统的同位素比检测下限为5×10~(-8)，比上1质量单位低5×10~(-8)，比1质量单位低5×10~(-10)，是主要同位素。
The IsoTrace heavy element AMS system has been successfully used to detect naturally-occurring U-236(U-236/U-238 = (5.6 +/- 1.5) x 10(-10)) in samples of uranium ore from Cigar Lake, Saskatchewan, Canada. This level of U-236 agrees with that previously claimed for samples of a processed uranium ore (D.J. Rokop, D.N. Metta and C.M. Stevens, Int. J. Mass Spectrom. Ion Phys. 8 (1972) 259 [1]), and is consistent with the amount of Pu-239 found in pitchblende (W.A. Myers and M. Lindner, J. Inorg. Nucl. Chem. 33 (1971) 3233 [2]). This experiment illustrates the general capability of a small tandem-based AMS system for analyzing actinides, in particular U-236. It can be shown that the isotope-ratio detection limit of this system, is at present 5 x 10(-8) for detecting a less abundant actinide isotope one mass unit above, and 5 x 10(-10) one mass unit below, a major isotope.