Bochum 2009 – wissenschaftliches Programm
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HK: Fachverband Hadronen und Kerne
HK 67: Poster Session
HK 67.33: Poster
Donnerstag, 19. März 2009, 14:00–16:00, Audi-Max
Isovector pairing effect on the particle-number projection two-proton separation energy — •Djamila Mokhtari1, Slimane Kerrouchi1, Mohamed Fellah1,2, and Nassima-Hosni Allal1,2 — 1Laboratoire de physique théorique, Faculte de Physique, USTHB BP32, el Alia-16111, Bab ezzouar, ALgiers, Algeria — 2Centre de Recherche Nucléaire d'Alger, Comena, 2Bd, Algiers, Algeria
The two-proton separation energy is studied by performing a particle-number projection with [1] and without [2] inclusion of the isovector neutron-proton (np) pairing correlations. It is numerically evaluated for even-even rare-earth nuclei such that the np pairing parameter is non-zero.
It is shown that the two-proton separation energy values calculated using the two approaches join, for almost all the considered elements, for the highest values of (N-Z).
However, the results including the np pairing correlations are closest to the experimental data when available.
Moreover, the two methods lead to the same prediction of the two-proton drip-line position, except for the Dysprosium and the Tungsten.
[1]N.H. Allal, M. Fellah, M.R. Oudih and N. Benhamouda, Eur. Phys. J. A27, s01(2006)301. [2]M.Fellah, T.F. Hammann and D.E. Medjadi, Phys. Rev. C8(1973)1585.