NUCL 9 |
| Projectile fragmentation has enabled us to study the basic nuclear properties as masses and binding energies which depend strongly on the underlying shell structure governed by magic numbers established for stable nuclei. However, the breaking of magicity has already been observed in neutron-rich nuclei at the N=20 shell closure by an ”island of inversion” and also at N=8 where the doubly magic 10He nucleus has been found to be unbound. Some theoretical calculations [1] have predicted new neutron magic numbers. Experiments performed at GANIL have been surveyed [2]which has resulted in the new neutron magic number N=16 derived from two-neutron separation energies while Ozawa [3] has found this information from one-neutron separation energies. Later, these results have been confirmed by other methods [4,5,6]. In our contribution we point out an analysis of triton separation energies, St, in light neutron-rich nuclei that shows the tendency to form the neutron halo in 11Li nucleus by adding a triton to new doubly magic 8He nucleus. [1] T. Otsuka et al., Phys. Rev. Lett. 87, 082502-1 (2002); Eur. Phys. J. A 15, 151 (2002); [2] Z. Dlouhý et al., RNB2000, April 2000, Divonne (France); Nucl. Phys. A 701, 189c (2002); [3] A. Ozawa et al., RNB2000, April 2000, Divonne (France); Phys.Rev. Lett. 84, 5493 (2000); [4] R. Kanungo et al., AIP, Conf. Proc. CP610, 741 (2002); [5] Z. Dlouhý et al., Nucl. Phys.A 722: 36c-41c (2003); [6] M. Stanoiu et al., Phys. Rev. C 69, 034312 (2004). |
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30 years of Projectile Fragmentation
8:30 AM-12:15 PM, Sunday, 10 September 2006 Moscone Center -- Room 272, Oral
Division of Nuclear Chemistry & Technology |