Radiative 9Be(n,γ0+1+2+3+4+5)10Be reaction rate in the potential cluster model*

Author:

Dubovichenko S.B.,Yeleusheva B.M.,Burkova N.A.,Tkachenko A.S.

Abstract

Abstract Within the framework of the modified potential cluster model with forbidden states, the total cross-sections of radiative n 9Be capture to the ground and five low-lying excited states are calculated at energies from 10−2 eV up to 5 MeV. The thermal cross-section mb is in good agreement with experimental data. We considered five resonances at the excitation energies E x from 7.371 MeV up to 10.570 MeV corresponding to the following states with (E x , MeV): (7.371), (7.542), (9.4), (9.56), and (10.570). The partial and total 9Be(n,γ 0+1+2+3+4+5)10Be reaction rates are calculated at temperatures from 0.001 to 10 T 9. Contrary to the available data, we propose that the rise in the reaction rate near factor five at T 9 \gt 1 is mainly due to the first (E R = 0.559 MeV) resonance. We foresee this contrast as arising from different model approaches.

Funder

Ministry of Science and Higher Education of the Republic of Kazakhstan

Publisher

IOP Publishing

Subject

Astronomy and Astrophysics,Instrumentation,Nuclear and High Energy Physics

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