2025 Issue 2

EDN: VPKAXE

Authors & Affiliations

Titarenko Yu.E.¹, Mednikov I.V.¹, Balyuk S.A.¹, Batyaev V.F.¹, Pavlov K.V.¹, Titarenko A.Yu.¹, Zhivun V.M.¹, Kirsanov A.S.¹, Zaritskiy Ya.O.¹, Orlov A.V.¹, Kovalishin A.A.¹, Davidenko V.D.¹, Kuteev B.V.¹, Saburov V.O.², Kazakov E.I.², Koryakin S.N.², Shegay P.V.^3
1 National Research Center “Kurchatov institute”, Moscow, Russia
² A. Tsyb Medical Radiological Research Center, Obninsk, Russia
³ National Medical Research Radiological Centre of the Ministry of Health of the Russian Federation, Moscow, Russia

Titarenko Yu.E.¹ – Head of Laboratory, Professor, Dr. Sci. (Phys.-Math.). Contacts: 117218, Russia, Moscow, Bolshaya Cheremushkinskaya st., 25. Tel.: +7 (916) 659-99-27; e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it..
Mednikov I.V.¹ – Deputy Head of the Complex.
Balyuk S.A.¹ – Deputy Head of laboratory.
Batyaev V.F.¹ – Senior Researcher, Cand. Sci. (Phys.-Math.).
Pavlov K.V.¹ – Leading Researcher, Cand. Sci. (Phys.-Math.).
Titarenko A.Yu.¹ – Senior Researcher, Cand. Sci. (Phys.-Math.).
Zhivun V.M.¹ – Senior Researcher, Cand. Sci. (Phys.-Math.).
Kirsanov A.S.¹ – Senior Researcher, Cand. Sci. (Tech.).
Zaritskiy Ya.O.¹ – Laboratory Assistant.
Orlov A.V.¹ – Laboratory Assistant.
Kovalishin A.A.¹ – Deputy Director for Nuclear Technologies, Corresponding Member of Russian Academy of Sciences, Dr. Sci. (Phys.-Math.).
Davidenko V.D.¹ – Head of the Department, Dr. Sci. (Phys.-Math.).
Kuteev B.V.¹ – Leading Researcher, Dr. Sci. (Phys.-Math.), Professor.
Saburov V.O.² – Head of Laboratory.
Kazakov E.I.² – Engineer.
Koryakin S.N.² – Head of the Department, Cand. Sci. (Biol.).
Shegay P.V.³ – Deputy Director General for Science, Cand. Sci. (Med.).

Abstract

The experimental values of (n, 2n), (n, p), (n, pn), (n, α) and (n, γ) reaction rates measured in a water phantom/light water blanket at a depth of 1 cm and 10 cm using samples of natural and highly enriched composition: ^natNi, ^natZr, ^natNb, ^natCd, ^natTi, ^natCo, ^{63, 65}Cu, ⁶⁴Zn, ^natIn, ^natAl, ^natMg, ^natFe, ^natAu, ^natTh are presented.
The neutron generator NG-24MT was used as a source of thermonuclear neutrons, which emits neutrons with an energy of ~ 14.1–14.7 MeV. The experiments were performed by the activation method without destroying the irradiated samples. The reaction products were measured using verified γ-spectrometers based on two coaxial HP detectors of the GC2518 type, a planar detector GUL 0110 and a scintillation detector NaI(Tl). The γ-spectra of the irradiated samples were processed using the GENIE2000 software package. The calculation of independent and/or cumulative reaction rates was carried out using the SIGMA program; a total of 52 reaction products with a half-life from 9.458 minutes (²⁷Mg) to 5.27 years (⁶⁰Co) were identified.
As a result of the work, a set of benchmark data was obtained for determining the predictive ability of programs and nuclear libraries for general and special purposes, widely used in world practice for the development of hybrid reactor installations, as well as in radiobiological studies using high-intensity neutron sources. The exact dimensions and composition of the materials of the installation elements are given, which are necessary for creating a mathematical model used for transport calculations of both neutron and gamma-quanta flows and their dose characteristics.

Keywords
blanket, water phantom, NG-24M neutron generator, cumulative/independent reaction rates, ex-perimental samples, coaxial/planar HP detectors

Article Text (PDF, in Russian)

References

UDC 539.172.4

Problems of Atomic Science and Technology. Series: Nuclear and Reactor Constants, 2025, no. 2, 2:8