Self-consistent calculations of radiative nuclear reaction characteristics for 56Ni, 132Sn, 208Pb
1 Institute for Physics and Power Engineering, Obninsk, Russia
2 National Research Centre “Kurchatov Institute”, Moscow, Russia
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Published online: 13 September 2017
The photon strength functions (PSF), neutron capture cross sections and average radiative widths of neutron resonances for three double-magic nuclei 56Ni, 132Sn and 208Pb have been calculated within the self-consistent version of the microscopic theory. Our approach includes phonon coupling (PC) effects in addition to the standard QRPA approach. With our microscopic PSFs, calculations of radiative nuclear reaction characteristics have been performed using the EMPIRE 3.1 nuclear reaction code. Three nuclear level density (NLD) models have been used: the phenomenological so-called GSM, phenomenological Enhanced GSM (EGSM) and microscopical combinatorial HFB model. For all the considered characteristics, we found a noticeable contribution of the PC effects and a significant disagreement between the results obtained with the GSM and the other two NLD models. The results confirm the necessity of using consistent microscopic approaches for calculations of radiative nuclear characteristics in double-magic nuclei.
© The Authors, published by EDP Sciences, 2017
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