Energy−Angular Correlations at Inelastic Scattering of Tagged Neutrons by Carbon, Nitrogen, and Oxygen Nuclei

V. F. Batyaev; Батяев В. Ф.; S. G. Belichenko; Беличенко С. Г.; M. D. Karetnikov; Каретников М. Д.; A. D. Maznitcin; Мазницин А. Д.; A. Yu. Presnyakov; Пресняков А. Ю.

doi:10.31857/S0032816223030175

Energy−Angular Correlations at Inelastic Scattering of Tagged Neutrons by Carbon, Nitrogen, and Oxygen Nuclei

Authors: Batyaev V.F.¹^,2, Belichenko S.G.¹, Karetnikov M.D.¹^,2, Maznitcin A.D.¹, Presnyakov A.Y.¹
Affiliations:
1. Dukhov All-Russia Research Institute of Automatics
2. National Research Nuclear University MEPhI (Moscow Engineering Physics Institute)
Issue: No 4 (2023)
Pages: 5-12
Section: ТЕХНИКА ЯДЕРНОГО ЭКСПЕРИМЕНТА
URL: https://rjdentistry.com/0032-8162/article/view/670456
DOI: https://doi.org/10.31857/S0032816223030175
EDN: https://elibrary.ru/CVQLBC
ID: 670456

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Abstract

Results of neutron activation analysis of substances using tagged neutron technology are rather sensitive to errors in measuring the parameters of γ-ray spectrum peaks. This is the reason for taking into account both the Doppler effect that leads to the shift and broadening of γ-ray spectrum peaks and the anisotropy of the γ-ray yield as a function of the angle between the directions of tagged neutrons and detected γ‑rays. The angular dependences of the shift and intensity (relative area) of γ-ray spectrum peaks for carbon, nitrogen, and oxygen nuclei have been measured at the tagged-neutron facility. The impact of the Doppler shift and anisotropy of the angular distribution in tagged-neutron devices is observed in analysis of extended objects and in case of the cascading arrangement of γ-detectors when γ-rays hit detectors at different angles with respect to the direction of tagged neutrons.

References

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