Journal article
Shell Erosion and Shape Coexistence in S-43(16)27
Physical Review Letters, Vol.102(9)
Mar/2009
Abstract
We report on the g-factor measurement of the first isomeric state in S-43(16)27 [E-x=320.5(5) keV, T-1/2=415(5) ns, and g=0.317(4)]. The 7/2(-) spin-parity of the isomer and the intruder nature of the ground state of the nucleus are experimentally established for the first time, providing direct and unambiguous evidence of the collapse of the N=28 shell closure in neutron-rich nuclei. The shell model, beyond the mean-field and semiempirical calculations, provides a very consistent description of this nucleus showing that a well deformed prolate and quasispherical states coexist at low energy.
Details
- Title
- Shell Erosion and Shape Coexistence in S-43(16)27
- Creators
- L. Gaudefroy (null)J. M. Daugas (null)Michael Hass (null) - 972WIS_INST___88S. Grevy (null)Ch. Stodel (null)J. C. Thomas (null)L. Perrot (null)M. Girod (null)B. Rosse (null)J. C. Angelique (null)D. L. Balabanski (null)E. Fiori (null)C. Force (null)G. Georgiev (null)D. Kameda (null)V. Kumar (null)R. L. Lozeva (null)I. Matea (null)V. Meot (null)
- Resource Type
- Journal article
- Publication Details
- Physical Review Letters, Vol.102(9); Mar/2009
- Number of pages
- 4
- Language
- English
- DOI
- https://doi.org/10.1103/PhysRevLett.102.092501
- Grant note
- European Community FP6 Structuring the ERA - Integrated Infrastructure Initiative [RII3-CT-2004-506065]; Israel Science FoundationL. G. thanks J.-F. Berger, J.-P. Delaroche, S. Peru, and N. Pillet for helpful discussions and advice, as well as A. Navin and O. Sorlin for reading the manuscript. We are grateful to the GANIL staff for support. This work has been supported by the European Community FP6 Structuring the ERA - Integrated Infrastructure Initiative, Contract EURONS No. RII3-CT-2004-506065 and by the Israel Science Foundation._ALMAME_DELIMITER_
- Record Identifier
- 993266566203596
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