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- Title
NEUTRON-PROTON PAIRING EFFECT ON ONE-PROTON AND TWO-PROTON SEPARATION ENERGIES IN RARE-EARTH PROTON-RICH NUCLEI.
- Authors
HAMMACHE, F.; ALLAL, N. H.; FELLAH, M.
- Abstract
The one-proton and two-proton separation energies are studied for "ordinary" and rare-earth proton-rich nuclei by including the isovector neutron-proton (np) pairing correlations using the BCS approximation. Even-even as well as odd nuclei are considered. In the latter case, the wave function is defined using the blocked-level technique. The single-particle energies used are those of a deformed Woods-Saxon mean field. It is shown that the np isovector pairing effects on the one-proton and two-proton separation energies are non-negligible. However, the only isovector BCS approximation seems to be inadequate for a good description of these quantities when including the np pairing effects: either a particle-number projection or the inclusion of the isoscalar pairing effect seems to be necessary. Another possible improvement would be a more realistic choice of the pairing strengths.
- Subjects
NEUTRON-proton interactions; PAIR production; SEPARATION (Technology); RARE earth metals; WAVE functions; PARTICLES (Nuclear physics); MEAN field theory
- Publication
International Journal of Modern Physics E: Nuclear Physics, 2012, Vol 21, Issue 12, p-1
- ISSN
0218-3013
- Publication type
Article
- DOI
10.1142/S0218301312501005