Probing the N=32 Shell Closure below the Magic Proton Number Z=20: Mass Measurements of the Exotic Isotopes ^{52,53}K
The recently confirmed neutron-shell closure at N=32 has been investigated for the first time below the magic proton number Z=20 with mass measurements of the exotic isotopes (52,53)K, the latter being the shortest-lived nuclide investigated at the online mass spectrometer ISOLTRAP. The resulting tw...
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| Veröffentlicht in: | Physical review letters 2015-05, Vol.114 (20), p.202501-202501 |
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| creator | Rosenbusch, M Ascher, P Atanasov, D Barbieri, C Beck, D Blaum, K Borgmann, Ch Breitenfeldt, M Cakirli, R B Cipollone, A George, S Herfurth, F Kowalska, M Kreim, S Lunney, D Manea, V Navrátil, P Neidherr, D Schweikhard, L Somà, V Stanja, J Wienholtz, F Wolf, R N Zuber, K |
| description | The recently confirmed neutron-shell closure at N=32 has been investigated for the first time below the magic proton number Z=20 with mass measurements of the exotic isotopes (52,53)K, the latter being the shortest-lived nuclide investigated at the online mass spectrometer ISOLTRAP. The resulting two-neutron separation energies reveal a 3 MeV shell gap at N=32, slightly lower than for 52Ca, highlighting the doubly magic nature of this nuclide. Skyrme-Hartree-Fock-Bogoliubov and ab initio Gorkov-Green function calculations are challenged by the new measurements but reproduce qualitatively the observed shell effect. |
| doi_str_mv | 10.1103/PhysRevLett.114.202501 |
| format | Article |
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| title | Probing the N=32 Shell Closure below the Magic Proton Number Z=20: Mass Measurements of the Exotic Isotopes ^{52,53}K |
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