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Tran TN, Khushvaktov JH, Kryachko IA, Stegailov VI, Tyutyunnikov SI, Abduvaliev AA. Study of the effect of photon self-absorption on the detection efficiency of HPGe detector in measurements of an activated uranium sample. Appl Radiat Isot 2023; 196:110770. [PMID: 36958081 DOI: 10.1016/j.apradiso.2023.110770] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2022] [Revised: 02/20/2023] [Accepted: 03/06/2023] [Indexed: 03/25/2023]
Abstract
The photon self-absorption effect of uranium on the full-energy peak (FEP) efficiency calibration of high purity germanium (HPGe) detector was studied as a function of energy using an activated uranium sample has a thickness of 1 mm. The absolute efficiencies of the detector were obtained with the use of gamma standard sources and gamma rays of radionuclides created by irradiating the uranium sample with secondary neutrons. The measurements were carried out with the use of a Planar HPGe detector. MCNP simulation code was used to verify the experimental results. The comparison of the empirical results with the simulation results showed a good agreement. To interpret the efficiencies, the reaction rates were calculated using two methods: (1) - the use of the efficiency curve from the standard sources combined with the self-absorption correction of the uranium material and (2) - the use of the efficiency curve obtained from gamma rays in the sample.
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Affiliation(s)
- T N Tran
- Joint Institute for Nuclear Research, Joliot-Curie 6, Dubna, Moscow Region, 141980, Russia; Institute of Physics, Vietnam Academy of Science and Technology, Hanoi, Viet Nam.
| | - J H Khushvaktov
- Joint Institute for Nuclear Research, Joliot-Curie 6, Dubna, Moscow Region, 141980, Russia
| | - I A Kryachko
- Joint Institute for Nuclear Research, Joliot-Curie 6, Dubna, Moscow Region, 141980, Russia
| | - V I Stegailov
- Joint Institute for Nuclear Research, Joliot-Curie 6, Dubna, Moscow Region, 141980, Russia
| | - S I Tyutyunnikov
- Joint Institute for Nuclear Research, Joliot-Curie 6, Dubna, Moscow Region, 141980, Russia
| | - A A Abduvaliev
- Joint Institute for Nuclear Research, Joliot-Curie 6, Dubna, Moscow Region, 141980, Russia
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Khushvaktov JH, Adam J, Baldin AA, Furman WI, Gustov SA, Kish YV, Solnyshkin AA, Stegailov VI, Svoboda J, Tichy P, Tsoupko-Sitnikov VM, Tyutyunnikov SI, Vespalec R, Vrzalova J, Wagner V, Yuldashev BS, Zavorka L, Zeman M. Monte Carlo simulations and experimental results on neutron production in the uranium spallation target QUINTA irradiated with 660 MeV protons. Appl Radiat Isot 2018; 137:102-107. [PMID: 29602028 DOI: 10.1016/j.apradiso.2018.03.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2017] [Revised: 12/01/2017] [Accepted: 03/06/2018] [Indexed: 11/26/2022]
Abstract
The activation experiment was performed using the accelerated beam of Phasotron accelerator at the Joint Institute for Nuclear Research (JINR). The natural uranium spallation target QUINTA was irradiated with protons with energy 660 MeV. Monte Carlo simulations of neutron production were performed using the Geant4 code. The number of leakage neutrons from the sections of the uranium target surrounded by the lead shielding and the number of leakage neutrons from lead were determined. The total number of fissions in the setup QUINTA was determined. Experimental values of reaction rates for the produced nuclei in the 127I sample were obtained and several values of reaction rates were compared with the results of simulations. Experimentally determined fluence of neutrons in energy interval 10-175 MeV using the (n,xn) reactions in the 127I(NaI) sample was compared with the results of simulations. Possibility of transmutation of the long-lived radionuclide 129I in the QUINTA setup was estimated.
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Affiliation(s)
- J H Khushvaktov
- Joint Institute for Nuclear Research, Dubna, Russia; Institute of Nuclear Physics ASRU, Tashkent, Uzbekistan.
| | - J Adam
- Joint Institute for Nuclear Research, Dubna, Russia; Nuclear Physics Institute CAS, Czech Republic
| | - A A Baldin
- Joint Institute for Nuclear Research, Dubna, Russia; Institute for Advanced Studies, Dubna, Russia
| | - W I Furman
- Joint Institute for Nuclear Research, Dubna, Russia
| | - S A Gustov
- Joint Institute for Nuclear Research, Dubna, Russia
| | - Yu V Kish
- Joint Institute for Nuclear Research, Dubna, Russia
| | | | | | - J Svoboda
- Joint Institute for Nuclear Research, Dubna, Russia; Brno University of Technology, Brno, Czech Republic
| | - P Tichy
- Joint Institute for Nuclear Research, Dubna, Russia
| | | | | | - R Vespalec
- Joint Institute for Nuclear Research, Dubna, Russia; Czech Technical University, Prague, Czech Republic
| | - J Vrzalova
- Joint Institute for Nuclear Research, Dubna, Russia; Nuclear Physics Institute CAS, Czech Republic
| | - V Wagner
- Nuclear Physics Institute CAS, Czech Republic
| | - B S Yuldashev
- Joint Institute for Nuclear Research, Dubna, Russia; Institute of Nuclear Physics ASRU, Tashkent, Uzbekistan
| | - L Zavorka
- Joint Institute for Nuclear Research, Dubna, Russia
| | - M Zeman
- Joint Institute for Nuclear Research, Dubna, Russia; Brno University of Technology, Brno, Czech Republic
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