Gamma-ray Spectrometer Assembled from 9×CeBr3-NaI(Tl) Phoswich Detectors

0552956 - ÚJF 2022 RIV PL eng J - Journal Article
Zeinulla, Zh. - Sobolev, Yu. G. - Stukalov, S. S. - Siváček, Ivan - Penionzhkevich, Y. E.
Gamma-ray Spectrometer Assembled from 9×CeBr3-NaI(Tl) Phoswich Detectors.
Acta physica Polonica. B. Roč. 14, č. 4 (2021), s. 755-760. ISSN 0587-4254. E-ISSN 1509-5770.
[III International Scientific Forum Nuclear Science and Technologies. Almaty, 20.09.2021-24.09.2021]
R&D Projects: GA MŠMT LTT18021
Institutional support: RVO:61389005
Keywords : the PARIS collaboration * gamma ray spectrometers * phoswich detectors
OECD category: Particles and field physics
Impact factor: 0.556, year: 2021
Method of publishing: Open access
https://doi.org/10.5506/APHYSPOLBSUPP.14.755

The technique of using a cluster of 9×CeBr3-NaI(Tl) phoswich detectors as a Compton suppression spectrometer for detecting low-energy Eγ < 4 MeV γ-radiation is investigated. The characteristics of a phoswich detectors cluster and a High-Purity Germanium detector (HPGe) with a BGO shield are compared. The main characteristics of γ-ray spectrometer: the energy resolutions ∆E, the total registration efficiency εγ and the peak efficiency εPEAK, depending on the energies Eγ of the registered γ-rays and on the distances to the source, are presented. It is shown that the Compton suppression coefficient values of both spectrometers are the same, while the peak efficiency of the phoswich cluster is three times higher than in the HPGe detector. The Compton suppression mode of the phoswich cluster is supposed to be used for studying β-delayed γ-decay processes, particularly direct γ-decay of Pygmy resonances.
Permanent Link: http://hdl.handle.net/11104/0328012