On the accuracy of gamma spectrometric isotope ratio measurements of uranium

被引：6

作者：

Rameback, H. ^{[1
,2
]}

Lagerkvist, P. ^{[1
]}

Holmgren, S. ^{[1
]}

Jonsson, S. ^{[1
]}

Sandstrom, B. ^{[1
]}

Tovedal, A. ^{[1
]}

Vesterlund, A. ^{[1
,2
]}

Vidmar, T. ^{[3
]}

Kastlander, J. ^{[4
]}

机构：

[1] Swedish Def Res Agcy, FOI, CBRN Def & Secur, SE-90182 Umea, Sweden

[2] Chalmers, Dept Chem & Chem Engn, SE-41296 Gothenburg, Sweden

[3] CEN SCK, Belgian Nucl Res Ctr, Boeretang 200, B-2400 Mol, Belgium

[4] Swedish Def Res Agcy, FOI, Def & Secur, Syst & Technol, SE-16490 Stockholm, Sweden

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 2016年 / 815卷

关键词：

Uranium; Isotope ratio; Gamma spectrometry; True coincidence summing; Nuclear Forensics International Working; Group (ITWG); 4th Collaborative Material Exercise (CMX-4); RAY SPECTROMETRY; MASS-SPECTROMETRY; DEAD-TIME; SAMPLES;

D O I：

10.1016/j.nima.2016.01.056

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

The isotopic composition of uranium was measured using high resolution gamma spectrometry. Two acid solutions and two samples in the form of UO2 pellets were measured. The measurements were done in close geometries, i.e. directly on the endcap of the high purity germanium detector (HPGe). Applying no corrections for count losses due to true coincidence summing (TCS) resulted in up to about 40% deviation in the abundance of U-235 from the results obtained with mass spectrometry. However, after correction for TCS, excellent agreement was achieved between the results obtained using two different measurement methods, or a certified value. Moreover, after corrections, the fitted relative response curves correlated excellently with simulated responses, for the different geometries, of the HPGe detector. (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：57 / 61

页数：5

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