Title:
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Microscopic-macroscopic approach for binding energies with the Wigner-Kirkwood method
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Author:
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Bhagwat, A.; Viñas Gausí, Xavier; Centelles Aixalà, Mario; Schuck, Peter; Wyss, R.
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Other authors:
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Universitat de Barcelona |
Abstract:
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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. |
Subject(s):
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-Física nuclear -Espectrometria de masses -Astrofísica -Teoria quàntica -Nuclear physics -Mass spectrometry -Astrophysics -Quantum theory |
Rights:
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(c) American Physical Society, 2010
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Document type:
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Article Article - Published version |
Published by:
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American Physical Society
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