Assay methods for 238U, 232Th, and 210Pb in lead and calibration of 210Bi bremsstrahlung emission from lead

被引：0
|
作者：
John L. Orrell
Craig E. Aalseth
Isaac J. Arnquist
Tere A. Eggemeyer
Brian D. Glasgow
Eric W. Hoppe
Martin E. Keillor
Shannon M. Morley
Allan W. Myers
Cory T. Overman
Sarah M. Shaff
Kimbrelle S. Thommasson
机构：
[1] National Security Directorate,
[2] Pacific Northwest National Laboratory,undefined
来源：
Journal of Radioanalytical and Nuclear Chemistry | 2016年 / 309卷
关键词：
Lead assay; U; Th; Pb; Inductively coupled plasma mass spectrometry (ICP-MS); α-spectroscopy; γ-ray spectroscopy;
D O I：
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学科分类号：
摘要：
Methods for measuring 238U, 232Th, and 210Pb in refined lead are presented. The 238U and 232Th concentrations are determined using isotope dilution inductively coupled plasma mass spectrometry after anion exchange column separation of dissolved lead samples. The 210Pb concentration is inferred through α-spectroscopy of a daughter isotope, 210Po, after precipitation separation of dissolved lead samples. Subsequent to the 210Po α-spectroscopy measurement, a method for evaluating 210Pb concentrations was developed via measurement of bremsstrahlung radiation from β-decay of a daughter isotope, 210Bi, using a 14-crystal array of high purity germanium detectors. Ten sources of refined lead were assayed and results are presented.
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页码：1271 / 1281
页数：10
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