TY  - CONF
AU  - Mauerhofer, Eric
AU  - Ophoven, Niklas
AU  - Ilic, Zeljko
AU  - Randriamalala, Tsitohaina H.
AU  - Vezhlev, Egor
AU  - Meleshenkovskii, Iaroslav
AU  - Stieghorst, Christian
AU  - Révay, Zsolt
AU  - Jolie, Jan
AU  - Strub, Erik
TI  - Fast Neutron-induced Gamma-ray Spectrometry (FaNGaS)
M1  - FZJ-2024-03630
PY  - 2024
AB  - Prompt Gamma Neutron Activation Analysis (PGNAA) based on cold or thermal neutron captureis a powerful technique for non-destructive elemental analysis of small and thin samples.However, due to limited penetration and attenuation effects, PGNAA is not suited for a preciseinvestigation of large objects. The feasibility of Prompt Gamma Analysis based on InelasticNeutron Scattering (PGAINS) to determine the elemental composition of large samples was alreadydemonstrated several decades ago [1]. The FaNGaS (Fast Neutron-induced Gamma-raySpectrometry) instrument, installed at Heinz Maier-Leibnitz Zentrum (MLZ) in 2014, advancesthis non-destructive analytical technique and makes it available for a broad community of industryand research [2-8]. Using the intense fission neutron beam delivered by the research reactorFRM II (Forschungs-Neutronenquelle Heinz Maier-Leibnitz) to investigate fast-neutroninduced prompt gamma-ray emission, it offers new possibilities for the chemical analysis oflarge or small samples as a complementary method to conventional thermal- or cold-neutronbased PGNAA. The predominant reaction channel of fast neutrons at FaNGaS is the (n,n’γ)inelastic scattering reaction, currently with only one existing database: the “Atlas of Gammaraysfrom the Inelastic Scattering of Reactor Fast Neutrons”, published in 1978 by Demidov etal. [9]. This data compilation is valuable and a relational database has been recently developedbased on this Atlas [10]. However, it was yet never validated and previous measurements withFaNGaS show the need for a critical and meticulous validation [3-6,8]. Apart from building upa comprehensive catalogue of (n,n’γ) reactions another main objective is a continuous optimizationof the instrument to improve the analytical sensitivity.In this talk the experimental set-upand technical specifications of FaNGaS will be given. Relative intensities and partial gammarayproduction cross sections of fast-neutron-induced prompt gamma rays derived from themeasurement of various elements will be presented along with literature comparisons.References1. Schrader CD, Stinner RJ (1961). J Geophys Res 66:1951–1956.2. Randriamalala TH et al. (2016). Nucl Instrum Methods A 806:370–377.3. Ilic Z et al. (2020). J Radioanal Nucl Chem 325:641–645.4. Mauerhofer E et al. (2021). J Radioanal Nucl Chem 331:535–546.5. Mauerhofer E et al. (2022. J Radioanal Nucl Chem 331:3987–4000.6. Ophoven N et al. (2022). J Radioanal Nucl Chem 331:5729–5740.7. Bouat S et al. (2021). Nondestruct Test Evaluation 37:1–13.8. Ophoven N et al. (2023). J Radioanal Nucl Chem (under review)9. Demidov A et al. (1978). Atomizdat, Moscow10. Hurst AM et al. (2021). Nucl Instrum Meth A 995:165095
T2  - International Conference on Modern Trends in Activation Analysis
CY  - 5 May 2024 - 10 May 2024, MERCURE BUDA CASTLE HILL BUDAPEST (Hungary)
Y2  - 5 May 2024 - 10 May 2024
M2  - MERCURE BUDA CASTLE HILL BUDAPEST, Hungary
LB  - PUB:(DE-HGF)6
UR  - https://juser.fz-juelich.de/record/1027078
ER  -