Density dependence of the pairing interaction and pairing correlation in unstable nuclei
2015 (English)In: Physical Review C. Nuclear Physics, ISSN 0556-2813, E-ISSN 1089-490X, Vol. 91, no 2, 024305Article in journal (Refereed) Published
This work aims at a global assessment of the effect of the density dependence of the zero-range pairing interaction. Systematic Skyrme-Hartree-Fock-Bogoliubov calculations with the volume, surface, and mixed pairing forces are carried out to study the pairing gaps in even-even nuclei over the whole nuclear chart. Calculations are also done in coordinate representation for unstable semimagic even-even nuclei. The calculated pairing gaps are compared with empirical values from four different odd-even staggering formulas. Calculations with the three pairing interactions are comparable for most nuclei close to the beta-stability line. However, the surface interaction calculations predict neutron pairing gaps in neutron-rich nuclei that are significantly stronger than those given by themixed and volume pairing. On the other hand, calculations with volume andmixed pairing forces show noticeable reduction of neutron pairing gaps in nuclei far from stability.
Place, publisher, year, edition, pages
American Physical Society , 2015. Vol. 91, no 2, 024305
IdentifiersURN: urn:nbn:se:kth:diva-162961DOI: 10.1103/PhysRevC.91.024305ISI: 000350174000001ScopusID: 2-s2.0-84922511228OAI: oai:DiVA.org:kth-162961DiVA: diva2:799875
FunderSwedish Research Council
QC 201503312015-03-312015-03-262015-04-27Bibliographically approved