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29 March 2024
 
  » pubmed » pmid12633421

 Article overview


New shape isomer in the self-conjugate nucleus 72Kr
E Bouchez ; I Matea ; W Korten ; F Becker ; B Blank ; C Borcea ; A Buta ; A Emsallem ; G de France ; J Genevey ; F Hannachi ; K Hauschild ; A Hürstel ; Y Le Coz ; M Lewitowicz ; R Lucas ; F Negoita ; F de Oliveira Santos ; D Pantelica ; J Pinston ; P Rahkila ; M Rejmund ; M Stanoiu ; Ch Theisen ;
Date 28 Feb 2003
Journal Phys Rev Lett, 90 (8), 082502
AbstractA new isomeric 0(+) state was identified as the first excited state in the self-conjugate (N=Z) nucleus 72Kr. By combining for the first time conversion-electron and gamma-ray spectroscopy with the production of metastable states in high-energy fragmentation, the electric-monopole decay of the new isomer to the ground state was established. The new 0(+) state is understood as the band head of the known prolate rotational structure, which strongly supports the interpretation that 72Kr is one of the rare nuclei having an oblate-deformed ground state. This observation gives in fact the first evidence for a shape isomer in a N=Z nucleus.
Source PubMed, pmid12633421
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