Experimental gamma coincidence spectra recorded in prompt gamma neutron activation analysis

被引：0

作者：

Rouaux, Jeremy Roult dit ^{[1
]}

Carasco, Cedric ^{[1
]}

Loubet, Laurent ^{[1
]}

Perot, Bertrand ^{[1
]}

Tamagno, Leonie ^{[2
]}

Collot, Johann ^{[3
]}

机构：

[1] Cadarache, Nucl Measurement Lab,CEA, DES,DTN,SMTA, IRESNE, F-13108 St Paul Les Durance, France

[2] Cadarache, CEA, DESM,SESC, IRESNE,DEC, F-13108 St Paul Les Durance, France

[3] UGA, CNRS, Grenoble INP, LPSC IN2P3, 53 Ave Martyrs, F-38026 Grenoble, France

来源：

JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY | 2024年 / 333卷 / 12期

关键词：

Prompt gamma neutron activation analysis; Gamma-gamma coincidence spectrometry; Sodium iodide scintillators; High purity germanium detector;

D O I：

10.1007/s10967-024-09822-x

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A feasibility study of gamma-gamma coincidence measurements in prompt gamma neutron activation analysis is carried out experimentally with a pulsed DT neutron generator, a polyethylene graphite cell and eight large NaI(Tl) scintillators. Detection limits are measured with multidimensional energy spectra created in gamma-gamma coincidence and compared to HPGe detector spectra. With a neutron emisison of 2.5 x 108 n.s-1, the detection limit for sulfur is about 15 g in 20 min, while the detection limit is larger than 200 g when using the HPGe detector spectra. Processing the summ of up to three coincident gamma-ray energies highlights useful signal for a dysprosium sample, and allows for detecting permanent magnets containing 4% mass dysprosium within a rotor mock-up composed of stainless steel.

引用

页码：6577 / 6592

页数：16

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