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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 Astrofísica Teoria quàntica Nuclear physics Mass spectrometry Astrophysics 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. |
Note: | Reproducció del document publicat a: http://dx.doi.org/10.1103/PhysRevC.81.044321 |
It is part of: | Physical Review C, 2010, vol. 81, num. 4, p. 044321-1-044321-18 |
URI: | http://hdl.handle.net/2445/45446 |
Related resource: | http://dx.doi.org/10.1103/PhysRevC.81.044321 |
ISSN: | 0556-2813 |
Appears in Collections: | Articles publicats en revistes (Física Quàntica i Astrofísica) |
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