Determination of 239Pu/240Pu isotopic ratio by high-resolution alpha-particle spectrometry using the ADAM program

被引：18

作者：

Pollanen, R. ^{[1
]}

Siiskonen, T. ^{[1
]}

Ihantola, S. ^{[1
]}

Toivonen, H. ^{[1
]}

Pelikan, A.

Inn, K. ^{[2
]}

La Rosa, J. ^{[2
]}

Bene, B. J. ^{[2
]}

机构：

[1] STUK Radiat & Nucl Safety Author, FI-00881 Helsinki, Finland

[2] NIST, Radiat & Biomol Phys Div, Radioact Grp, Gaithersburg, MD 20899 USA

来源：

APPLIED RADIATION AND ISOTOPES | 2012年 / 70卷 / 04期

关键词：

Alpha spectrometry; Spectrum unfolding; Plutonium; Isotopic ratio; ENVIRONMENTAL-SAMPLES; PU-240/PU-239; SPECTRA; CODE;

D O I：

10.1016/j.apradiso.2011.12.026

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

A novel analysis program to unfold alpha-particle energy spectra was introduced, demonstrated and validated using radiochemically processed test sources, which contained different amounts of Pu-239 and Pu-240. A high-resolution alpha spectrometer was used for data acquisition. The software known as ADAM unfolds the spectra using nuclide-specific decay data as a constraint. The peaks can have different shapes and the software can also cope with the coincidences between alpha particles and electrons/photons. In the present paper, the Pu-239/Pu-240 activity ratios from alpha spectrometry agreed, within the stated uncertainties, with the reference values. Number of counts in the Pu-239,Pu-240 peak group must be larger than 100 to obtain reliable values when using semiconductor detector of energy resolution FWHM=10.6 keV. (c) 2011 Elsevier Ltd. All rights reserved.

引用

页码：733 / 739

页数：7

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