G. Roepke, A. Schnell, P. Schuck, U. Lombardo
Published 1999-06-29Version 1
Isospin singlet (pn) pairing as well as quartetting in nuclei is expected to arise near the symmetry line $N=Z$. Empirical values can be deduced from the nuclear binding energies applying special filters. Within the local density approximation, theoretical estimates for finite nuclei are obtained from results for the condensation energy of asymmetric nuclear matter. It is shown that the isospin singlet condensation energy drops down abruptly for |N-Z|~4 for medium nuclei in the region A=40. Furthermore, alpha-like quartetting and the influence of excitations are discussed.
Comments: 19 pages, 19 figures, submitted to PRC
Journal: Phys.Rev.C61:024306,2000
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