High-resolution alpha-particle spectrometry of the 230U decay series

被引:13
作者
Marouli, M. [1 ]
Pomme, S. [1 ]
Paepen, J. [1 ]
Van Ammel, R. [1 ]
Jobbagy, V. [1 ]
Dirican, A. [1 ]
Suliman, G. [1 ]
Stroh, H. [1 ]
Apostolidis, C. [2 ]
Abbas, K. [3 ]
Morgenstern, A. [2 ]
机构
[1] Commiss European Communities, Joint Res Ctr, Inst Reference Mat & Measurements, B-2440 Geel, Belgium
[2] Commiss European Communities, Joint Res Ctr, Inst Transuranium Elements, D-76125 Karlsruhe, Germany
[3] Commiss European Communities, Joint Res Ctr, Inst Hlth & Consumer Protect, I-21020 Ispra, VA, Italy
关键词
Alpha spectrometry; U-230; Th-226; Decay data; GAIN STABILIZATION METHOD;
D O I
10.1016/j.apradiso.2012.02.107
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
High-resolution alpha-particle spectrometry was performed on the U-230 decay series. A U-230 source was prepared on a stainless steel disc by electrodeposition in an ammonium nitrate solution. Spectrometry of the alpha-particle energy spectrum was performed with ion-implanted planar silicon detectors in vacuum. A set of alpha emission probabilities is presented for U-230 and Th-226. The measured peak intensities were corrected mathematically for coincidental detection of alpha-particles and conversion electrons emitted in the same decay. A good agreement with literature data was observed. The uncertainty budget and the correlation matrix are presented. The validity of the alpha-particle energies was tested and could be confirmed for most peaks within a few keV, but discrepancies were found for the 2nd peak of Th-226 and the main peak of Rn-218. (C) 2012 Elsevier Ltd. All rights reserved.
引用
收藏
页码:2270 / 2274
页数:5
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