Naslov
Beta decay of odd-A nuclei with the interacting boson- fermion model based on the Gogny energy density functional

Autori
Nomura, K. ; Rodríguez-Guzmán, R. ; Robledo, L. M.

Izvornik
Physical review. C (2469-9985) 101 (2020), 2; 024311, 14

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

Ključne riječi
boson-fermion model ; Gogny-D1M ; energy density functional

Sažetak
The low-energy excitations and β decays of odd-A nuclei are studied within the interacting boson- fermion model (IBFM), based on the Gogny-D1M nuclear energy density functional (EDF). The constrained HartreeFock-Bogoliubov (HFB) approximation is employed to compute potential energy surfaces in terms of triaxial quadrupole degrees of freedom for even-even Xe and Ba nuclei in the mass A ≈ 130 region. The mean field approximation also provides spherical single- particle energies and occupation probabilities for the neighboring odd-A nuclei. Those quantities represent a microscopic input for spectroscopic calculations in odd-A Xe, Ba, Cs and La isotopes. The Gamow-Teller (GT) and Fermi (F) transition matrix elements needed to compute β-decay log f t values are obtained without any phenomenological fitting. It is shown that both the low-lying states and β decays of the studied odd-A systems are described reasonably well within the employed theoretical framework.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

POVEZANOST RADA