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1.
Phys Rev Lett ; 109(16): 162502, 2012 Oct 19.
Artigo em Inglês | MEDLINE | ID: mdl-23215071

RESUMO

The neutron-rich lead isotopes, up to (216)Pb, have been studied for the first time, exploiting the fragmentation of a primary uranium beam at the FRS-RISING setup at GSI. The observed isomeric states exhibit electromagnetic transition strengths which deviate from state-of-the-art shell-model calculations. It is shown that their complete description demands the introduction of effective three-body interactions and two-body transition operators in the conventional neutron valence space beyond (208)Pb.

2.
Phys Rev Lett ; 105(17): 172501, 2010 Oct 22.
Artigo em Inglês | MEDLINE | ID: mdl-21231037

RESUMO

A study of cooled ¹97Au projectile-fragmentation products has been performed with a storage ring. This has enabled metastable nuclear excitations with energies up to 3 MeV, and half-lives extending to minutes or longer, to be identified in the neutron-rich nuclides ¹8³(,)¹84(,)¹86Hf and ¹86(,)¹87Ta. The results support the prediction of a strongly favored isomer region near neutron number 116.

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