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Title: Microscopic-macroscopic approach for binding energies with the Wigner-Kirkwood method
Author: Bhagwat, A.
Viñas Gausí, Xavier
Centelles Aixalà, Mario
Schuck, Peter
Wyss, R.
Keywords: Física nuclear
Espectrometria de masses
Teoria quàntica
Nuclear physics
Mass spectrometry
Quantum theory
Issue Date: 2010
Publisher: American Physical Society
Abstract: 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.
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It is part of: Physical Review C, 2010, vol. 81, num. 4, p. 044321-1-044321-18
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ISSN: 0556-2813
Appears in Collections:Articles publicats en revistes (Física Quàntica i Astrofísica)

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