A Hartree-Fock-Bogoliubov mass formula

摘要: In order to have more reliable predictions of nuclear masses at the neutron drip line, we here go beyond recent mass formula HFBCS-1 and present a new formula, HFB-1, based on Hartree-Fock-Bogoliubov method. As with use 10-parameter Skyrme force along 4-parameter δ-function pairing 2-parameter phenomenological Wigner term. However, original (MSk7), rms error becomes unacceptably large fit is required. With isoscalar isovector effective constrained be equal, remaining 15 degrees freedom are fitted all 1754 measured nuclei A ≥ 16, N - Z > 2 given in 1995 Audi-Wapstra compilation. The respect 1888 Z, 8 0.764 MeV. complete table, HFB-1 (available Web), has been constructed, giving lying between two lines over range ≤ 120. comparison tables shows that HFBCS model very good approximation HFB theory, particular for masses, extrapolated never differing by than MeV below 110. We also find behaviour shell gaps far away from region beta stability does not depend whether or methods used, particular, no quenching astrophysical interest arises replacing BCS method Bogoliubov © 2002 Elsevier Science B.V. All rights reserved.