Performance of alpha spectrometry in the analysis of uranium isotopes in environmental and nuclear materials

被引：20

作者：

Carvalho, Fernando P. ^{[1
]}

Oliveira, Joao M. ^{[1
]}

机构：

[1] ITN, Dept Radiol Protect & Nucl Safety, P-2686953 Sacavem, Portugal

来源：

JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY | 2009年 / 281卷 / 03期

关键词：

Alpha spectrometry; Uranium isotopes; Isotopic ratios; RADIONUCLIDES;

D O I：

10.1007/s10967-009-0046-2

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The accuracy of alpha spectrometry in the determination of uranium isotopes at various concentrations levels and with various isotope ratios was tested in a round robin international intercomparison exercise. Results of isotope activity/mass and isotope mass ratios obtained by alpha spectrometry were accurate in a wide range of uranium masses and in isotopic ratios typical of depleted, natural, and low enriched uranium samples. Determinations by alpha spectrometry compared very satisfactorily in accuracy with those by mass spectrometry. For example, determination of U isotopes in natural uranium by alpha spectrometry agreed with mass spectrometry determinations at within +/-1%. However, the (236)U isotope, particularly if present in activities much lower than (235)U, might not be determined accurately due to overlap in the alpha particle energies of these two uranium isotopes.

引用

页码：591 / 596

页数：6

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