Microscopic-macroscopic approach for binding energies with the Wigner-Kirkwood method


Autoria(s): Bhagwat, A.; Viñas Gausí, Xavier; Centelles Aixalà, Mario; Schuck, Peter; Wyss, R.
Contribuinte(s)

Universitat de Barcelona

Resumo

The semiclassical Wigner-Kirkwood ̄h expansion method is used to calculate shell corrections for spherical and deformed nuclei. The expansion is carried out up to fourth order in ̄h. A systematic study of Wigner-Kirkwood averaged energies is presented as a function of the deformation degrees of freedom. The shell corrections, along with the pairing energies obtained by using the Lipkin-Nogami scheme, are used in the microscopic-macroscopic approach to calculate binding energies. The macroscopic part is obtained from a liquid drop formula with six adjustable parameters. Considering a set of 367 spherical nuclei, the liquid drop parameters are adjusted to reproduce the experimental binding energies, which yields a root mean square (rms) deviation of 630 keV. It is shown that the proposed approach is indeed promising for the prediction of nuclear masses.

Identificador

http://hdl.handle.net/2445/45446

Idioma(s)

eng

Publicador

American Physical Society

Direitos

(c) American Physical Society, 2010

info:eu-repo/semantics/openAccess

Palavras-Chave #Física nuclear #Espectrometria de masses #Astrofísica #Teoria quàntica #Nuclear physics #Mass spectrometry #Astrophysics #Quantum theory
Tipo

info:eu-repo/semantics/article

info:eu-repo/semantics/publishedVersion