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@INPROCEEDINGS{Mauerhofer:1027078,
author = {Mauerhofer, Eric and Ophoven, Niklas and Ilic, Zeljko and
Randriamalala, Tsitohaina H. and Vezhlev, Egor and
Meleshenkovskii, Iaroslav and Stieghorst, Christian and
Révay, Zsolt and Jolie, Jan and Strub, Erik},
title = {{F}ast {N}eutron-induced {G}amma-ray {S}pectrometry
({F}a{NG}a{S})},
reportid = {FZJ-2024-03630},
year = {2024},
abstract = {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},
month = {May},
date = {2024-05-05},
organization = {International Conference on Modern
Trends in Activation Analysis, MERCURE
BUDA CASTLE HILL BUDAPEST (Hungary), 5
May 2024 - 10 May 2024},
subtyp = {Invited},
cin = {JCNS-2 / JCNS-HBS / JARA-FIT / JCNS-4 / JCNS-ESS},
cid = {I:(DE-Juel1)JCNS-2-20110106 / I:(DE-Juel1)JCNS-HBS-20180709
/ $I:(DE-82)080009_20140620$ / I:(DE-Juel1)JCNS-4-20201012 /
I:(DE-Juel1)JCNS-ESS-20170404},
pnm = {632 - Materials – Quantum, Complex and Functional
Materials (POF4-632) / 6G4 - Jülich Centre for Neutron
Research (JCNS) (FZJ) (POF4-6G4)},
pid = {G:(DE-HGF)POF4-632 / G:(DE-HGF)POF4-6G4},
typ = {PUB:(DE-HGF)6},
url = {https://juser.fz-juelich.de/record/1027078},
}