Shape coexistence at N=20 and N=28: Study of 02+ states in 34Si and 44S

S. Grévy, F. Rotaru, F. Negoita, C. Borcea, R. Borcea, A. Buta, S. Calinescu, C. Petrone, M. Stanoiu, J. Mrazek, S. Lukyanov, Y. Penionzhkevich, L. Cáceres, F. De Oliveira, C. Force, D. Lebhertz, O. Sorlin, C. Stodel, J. C. Thomas, R. ChevrierJ. M. Daugas, L. Gaudefroy, Zs Dombrádi, D. Sohler, F. Nowacki, A. Poves, F. Azaiez, I. Stefan, N. L. Achouri, J. C. Angélique, B. Bastin

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

It is well known that the nuclear shell structure changes for the most exotic nuclei. One of the consequences of this phenomenon is the modification of the "classical" magic numbers, as experimentally observed at N = 20 and N = 28. Nevertheless, the mechanisms responsible for such changes are still under discussion and more experimental information is needed to better constrain the theoretical models. In these proceedings, we report on the discovery and the experimental study by precise spectroscopy experiments of the 0 2+ state in 34Si and 44S. The 34Si is located between the magic spherical 36S and the deformed 32Mg, member of the so-called island of inversion, whereas 44S is located between the magic spherical 48Ca and the deformed 42Si. Therefore, the structure of these nuclei, and in particular the phenomenon of shape coexistence, is of crucial importance to understand how the intruder configurations progressively dominate the ground state structure of the most exotic nuclei at both N = 20 and N = 28.

Original languageEnglish
Title of host publicationFrontiers in Gamma-Ray Spectroscopy 2012, FIG 2012
PublisherAmerican Institute of Physics Inc.
Pages167-172
Number of pages6
ISBN (Print)9780735412453
DOIs
Publication statusPublished - Jan 1 2014
EventInternational Conference on Frontiers in Gamma-ray Spectroscopy, FIG 2012 - New Delhi, India
Duration: Mar 5 2012Mar 7 2012

Publication series

NameAIP Conference Proceedings
Volume1609
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Other

OtherInternational Conference on Frontiers in Gamma-ray Spectroscopy, FIG 2012
CountryIndia
CityNew Delhi
Period3/5/123/7/12

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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    Grévy, S., Rotaru, F., Negoita, F., Borcea, C., Borcea, R., Buta, A., Calinescu, S., Petrone, C., Stanoiu, M., Mrazek, J., Lukyanov, S., Penionzhkevich, Y., Cáceres, L., De Oliveira, F., Force, C., Lebhertz, D., Sorlin, O., Stodel, C., Thomas, J. C., ... Bastin, B. (2014). Shape coexistence at N=20 and N=28: Study of 02+ states in 34Si and 44S. In Frontiers in Gamma-Ray Spectroscopy 2012, FIG 2012 (pp. 167-172). (AIP Conference Proceedings; Vol. 1609). American Institute of Physics Inc.. https://doi.org/10.1063/1.4893271