A Neutron Spectrometer for Experiments with Radioactive Beams on the ACCULINNA-2 Fragment Separator

A. A. Bezbakh; S. G. Belogurov; R. Wolski; E. M. Gazeeva; M. S. Golovkov; A. V. Gorshkov; G. Kaminski; M. Yu. Kozlov; S. A. Krupko; I. A. Muzalevky; E. Yu. Nikolskii; E. V. Ovcharenko; R. S. Slepnev; G. M. Ter-Akopian; A. S. Fomichev; V. Chudoba; P. G. Sharov; V. N. Schetinin

doi:10.1134/S0020441218050032

A Neutron Spectrometer for Experiments with Radioactive Beams on the ACCULINNA-2 Fragment Separator

Authors: Bezbakh A.A.¹, Belogurov S.G.¹^,2, Wolski R.¹^,3, Gazeeva E.M.¹, Golovkov M.S.¹, Gorshkov A.V.¹, Kaminski G.¹^,3, Kozlov M.Y.¹, Krupko S.A.¹, Muzalevky I.A.¹^,4, Nikolskii E.Y.¹^,5, Ovcharenko E.V.¹, Slepnev R.S.¹, Ter-Akopian G.M.¹, Fomichev A.S.¹, Chudoba V.¹^,4, Sharov P.G.¹, Schetinin V.N.¹
Affiliations:
1. Joint Institute for Nuclear Research (JINR)
2. National Research Nuclear University
3. Institute of Nuclear Physics PAN
4. Institute of Physics
5. National Research Center “Kurchatov Institute”
Issue: Vol 61, No 5 (2018)
Pages: 631-638
Section: Nuclear Experimental Technique
URL: https://bakhtiniada.ru/0020-4412/article/view/160366
DOI: https://doi.org/10.1134/S0020441218050032
ID: 160366

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Abstract

A neutron spectrometer based on stilbene crystals has been developed by the Flerov Laboratory of Nuclear Reactions at the Joint Institute for Nuclear Research (Dubna, Russia). The timing resolution is determined as a function of the signal amplitude (σT = 0.18 ns at an amplitude of 1 MeV in the electron equivalent). The measured energy resolution of the detecting modules for γ rays is σE/E = 4.5% at E = 1 MeV. The quality of the n–γ discrimination is investigated. It is shown that reliable discrimination is possible, beginning with a deposited energy of 100 keV in the electron equivalent, which corresponds to the kinetic energy of recoil protons of ∼700 keV. The neutron spectrometer helps to significantly expand the experimental capabilities and to carry out correlation experiments with radioactive beams on the ACCULINNA-2 fragment separator at a new level of quality.

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A Neutron Spectrometer for Experiments with Radioactive Beams on the ACCULINNA-2 Fragment Separator

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Abstract

About the authors

Supplementary files