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
收藏
页码：6577 / 6592
页数：16
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