2023, Issue 2

EDN: JINPFX

Authors & Affiliations

Titarenko Yu.E.¹, Mednikov I.V.¹, Batyaev V.F.¹, Pavlov K.V.¹, Titarenko A.Yu.¹, Legostaev V.O.¹, Zhivun V.M.¹, Zaritskiy Ya.O.¹, Kovalishin A.A.¹, Davidenko V.D.¹, Kuteev B.V.¹, Kashchuk Yu.A.², Meshchaninov S.A.², Obudovsky S.Yu.^2
1 National research center “Kurchatov institute”, Moscow, Russia
² Private institution “ITER-Center”, Moscow, Russia

Titarenko Yu.E.¹ – Head of Laboratory, Dr. Sci. (Phys.-Math.), Professor. Contacts: 25, Bolshaya Cheremushinskaya st., Moscow, Russia, 117218. 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.
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.).
Legostaev V.O.¹ – Head of Laboratory.
Zhivun V.M.¹ – Senior Researcher, Cand. Sci. (Phys.-Math.).
Zaritskiy Ya.O.¹ – Laboratory Assistant.
Kovalishin A.A.¹ – Deputy Director for Nuclear Technologies, Dr. Sci. (Phys.-Math.), Corresponding Member, Russian Academy of Sciences.
Davidenko V.D.¹ – Head of the Department, Dr. Sci. (Phys.-Math.).
Kuteev B.V.¹ – Deputy Head of the Department Tokamaks for Hybrid Systems, Dr. Sci. (Phys.-Math.), Professor.
Kashchuk Yu.A.² – Head of the Department, Cand. Sci. (Phys.-Math.).
Meshchaninov S.A.² – Researcher.
Obudovsky S.Yu.² – Researcher.

Abstract

For a micromodel of a fusion blanket based on 0.52NaF + 0.48ZrF₄ melt of fluoride salt the experimental values of (n, 2n), (n, p), (n, pn), (n, α), (n, n'γ) and (n, γ) reaction rates measured in channels via samples of natural and highly enriched composition: ^natNi, ^natZr, ^natNb, ^natCd, ^natTi, ^natCo, ^63,65Cu, ⁶⁴Zn, ^natIn, ^natAl, ^natMg, ^natFe, ^natAu, ^natTh are presented. The experiments were carried out by the activation method without destroying the irradiated samples. As a source of fusion neutrons was used an NG-24M neutron generator manufactured by VNIIA im. N.L. Dukhov, which emits neutrons with an energy of ~14.1 MeV. The reaction products were measured using verified γ-spectrometers based on two GC2518 coaxial HP detectors, a GUL 0110 planar detector, and a LaBr₃(Ce) scintillation detector. 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 code; in total, 52 reaction products with a half-life from 9.458 minutes (²⁷Mg) to 5.27 years (⁶⁰Co) were identified. The dimensions and composition of the materials of the installation elements are presented, which are necessary to create a mathematical model used to calculate the reaction rates by transport codes.

Keywords
fusion blanket, salt blanket micromodel, water tank, fusion neutron source, reaction rate, NG-24M neutron generator, solid melt fluoride salt, 0.52NaF+0.48ZrF₄, spectral indices, product of threshold (n, 2n), (n, p), (n, pn), (n, α), (n, n'γ), reaction, capture reaction (n, γ), axial neutron distribution

Article Text (PDF, in Russian)

References

UDC 539.172.4

Problems of Atomic Science and Technology. Series: Nuclear and Reactor Constants, 2023, no. 2, 2:7