Naslov
Spectroscopy of odd-odd nuclei within the interacting boson- fermion-fermion model based on the Gogny energy- density functional

Autori
Nomura, Kosuke ; Rodríguez-Guzmán, Rayner ; Robledo, Luis M.

Izvornik
Physical review. C (2469-9985) 99 (2019), 3; 034308, 10

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Nuclear Structure

Sažetak
We present a method to calculate spectroscopic properties of odd- odd nuclei within the framework of the interacting boson-fermion- fermion model (IBFFM) based on the Gogny energy-density functional. The (β, γ )-deformation energy surface of the even-even (boson-)core nucleus, spherical single-particle energies, and occupation probabilities of the odd neutron and odd proton are provided by the constrained self-consistent mean-field calculation within the Hartree-Fock-Bogoliubov method with the Gogny-D1M functional. These quantities are used as a microscopic input to fix most of the parameters of the IBFFM Hamiltonian. Only a few coupling constants for the boson-fermion Hamiltonian and the residual neutron-proton interaction are specifically adjusted to reproduce experimental low-energy spectra in odd- mass and odd- odd nuclei, respectively. In this way, the number of free parameters involved in the IBFFM framework is reduced significantly. The method is successfully applied to the description of the low- energy spectra and electromagnetic transition rates in the odd-odd 194, 196, 198 Au nuclei.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

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