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Phys. Rev. C 64, 027301 (2001) [3 pages]

Isovector effective mass in the Skyrme-Hartree-Fock method

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J. M. Pearson1 and S. Goriely2
1Département de Physique, Université de Montréal, Montréal, Québec, Canada H3C 3J7
2Institut d’Astronomie et d’Astrophysique, CP-226, Université Libre de Bruxelles, Campus de la Plaine, Boulevard du Triomphe, B-1050 Brussels, Belgium

Received 22 December 2000; published 25 June 2001

Skyrme-Hartree-Fock-BCS calculations show that the nuclear mass data constrain the value of the isovector effective mass Mv* in the vicinity of the Fermi surface to lie in the range of 0.90M±0.20M, M being the real nucleon mass. These rather large error bars imply uncertainties of up to 4 MeV in the mass extrapolations out to the neutron-drip line, but the corresponding uncertainties in the extrapolated neutron-separation energies Sn, beta-decay energies Qβ, and nuclear level densities are too small to be significant for the r process of nucleosynthesis.

© 2001 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevC.64.027301
DOI:
10.1103/PhysRevC.64.027301
PACS:
21.10.Dr, 21.10.Ma, 21.60.Jz, 95.30.Cq