INVESTIGATION OF (γ, xn)-REACTIONS ON NATURAL IRIDIUM AT 55 MeV BREMSSTRAHLUNG END-POINT ENERGY

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Abstract

The paper presents the results of a study of the flux-weighted average cross sections of 185–190Ir and 192Ir nuclei production in (γ, xn)-reactions under irradiation of a natural mixture of iridium isotopes by Bremsstrahlung with an end-point energy of 55 MeV. For the first time experimental data on the weighted average cross-sections of photoneutron reactions with the emission of up to 6 particles have been compared with theoretical weighted average cross-sections calculated in the framework of the Fermi model with a constant temperature and the Gogni–Hartree–Fock–Bogoliubov nuclear mass model using the TALYS1.96 software. It is demonstrated that the cross sections of the investigated reactions can be accurately described by the Fermi model with a constant temperature, which incorporates pre-equilibrium processes.

About the authors

M. V. Zheltonozhskaya

Faculty of Physics, Lomonosov Moscow State University

Email: zhelton@yandex.ru
Russia

P. D. Remizov

Faculty of Physics, Lomonosov Moscow State University

Russia

V. D. Pupyshev

Faculty of Physics, Lomonosov Moscow State University

Russia

V. V. Khankin

Faculty of Physics, Lomonosov Moscow State University

Russia

A. A. Kuzmenkov

Faculty of Chemistry, Lomonosov Moscow State University

Russia

A. P. Chernyaev

Faculty of Physics, Lomonosov Moscow State University

Russia

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