EPJ Web of Conferences (Mar 2014)
Study of shape transition in the neutron-rich Os isotopes
- John P.R.,
- Modamio V.,
- Valiente-Dobón J.J.,
- Mengoni D.,
- Gottardo A.,
- Bazzacco D.,
- Lunardi S.,
- Alexander T.,
- Angelis G. de,
- Ashwood N.,
- Barr M.,
- Bizzeti P.G.,
- Bizzeti-Sona A.M.,
- Bottoni S.,
- Bowry M.,
- Bracco A.,
- Browne F.,
- Bunce M.,
- Gadea A.,
- Camera F.,
- Corradi L.,
- Crespi F.C.L.,
- Farnea E.,
- Fioretto E.,
- Kokalova Tz.,
- Korten W.,
- Kuşoğlu A.,
- Lenzi S.,
- Leoni S.,
- Michelagnoli C.,
- Mijatović T.,
- Montagnoli G.,
- Montanari D.,
- Napoli D.R.,
- Podolyák Zs.,
- Pollarolo G.,
- Recchia F.,
- Roberts O.J.,
- Şahin E.,
- Salsac M.-D.,
- Scarlassara F.,
- Stefanini A.M.,
- Szilner S.,
- Ur C.A.,
- Walshe J.,
- Wheldon C.
Affiliations
- John P.R.
- CEA/Saclay, IRFU/Service de Physique Nucleaire
- Modamio V.
- INFN Laboratori Nazionali di Legnaro
- Valiente-Dobón J.J.
- INFN Laboratori Nazionali di Legnaro
- Mengoni D.
- CEA/Saclay, IRFU/Service de Physique Nucleaire
- Gottardo A.
- INFN Laboratori Nazionali di Legnaro
- Bazzacco D.
- INFN Sezione di Padova
- Lunardi S.
- CEA/Saclay, IRFU/Service de Physique Nucleaire
- Alexander T.
- Department of Physics, University of Surrey
- Angelis G. de
- INFN Laboratori Nazionali di Legnaro
- Ashwood N.
- School of Physics and Astronomy, University of Birmingham
- Barr M.
- School of Physics and Astronomy, University of Birmingham
- Bizzeti P.G.
- Bizzeti-Sona A.M.
- Bottoni S.
- Bowry M.
- Department of Physics, University of Surrey
- Bracco A.
- Browne F.
- University of Brighton
- Bunce M.
- Department of Physics, University of Surrey
- Gadea A.
- Instituto de Física Corpuscular, CSIC
- Camera F.
- Corradi L.
- INFN Laboratori Nazionali di Legnaro
- Crespi F.C.L.
- Farnea E.
- INFN Sezione di Padova
- Fioretto E.
- INFN Laboratori Nazionali di Legnaro
- Kokalova Tz.
- School of Physics and Astronomy, University of Birmingham
- Korten W.
- CEA/Saclay, IRFU/Service de Physique Nucleaire
- Kuşoğlu A.
- İstanbul Üniversitesi
- Lenzi S.
- CEA/Saclay, IRFU/Service de Physique Nucleaire
- Leoni S.
- Michelagnoli C.
- CEA/Saclay, IRFU/Service de Physique Nucleaire
- Mijatović T.
- Institut Ruđer Bošković
- Montagnoli G.
- CEA/Saclay, IRFU/Service de Physique Nucleaire
- Montanari D.
- CEA/Saclay, IRFU/Service de Physique Nucleaire
- Napoli D.R.
- INFN Laboratori Nazionali di Legnaro
- Podolyák Zs.
- University of Brighton
- Pollarolo G.
- Recchia F.
- CEA/Saclay, IRFU/Service de Physique Nucleaire
- Roberts O.J.
- University of Brighton
- Şahin E.
- INFN Laboratori Nazionali di Legnaro
- Salsac M.-D.
- CEA/Saclay, IRFU/Service de Physique Nucleaire
- Scarlassara F.
- CEA/Saclay, IRFU/Service de Physique Nucleaire
- Stefanini A.M.
- INFN Laboratori Nazionali di Legnaro
- Szilner S.
- Institut Ruđer Bošković
- Ur C.A.
- INFN Sezione di Padova
- Walshe J.
- School of Physics and Astronomy, University of Birmingham
- Wheldon C.
- School of Physics and Astronomy, University of Birmingham
- DOI
- https://doi.org/10.1051/epjconf/20146602057
- Journal volume & issue
-
Vol. 66
p. 02057
Abstract
The neutron-rich isotopes of tungsten, osmium and platinum have different shapes in their ground states and present also shape transitions phenomena. Spectroscopic information for these nuclei is scarce and often limited to the gamma rays from the decay of isomeric states. For the neutron-rich even-even osmium isotopes 194Os and 198Os, a shape transition between a slightly prolate deformed to an oblate deformed ground state was deduced from the observed level schemes. For the even-even nucleus lying in between, 196Os, no gamma ray transition is known. In order to elucidate the shape transition and to test the nuclear models describing it, this region was investigated through gamma-ray spectroscopy using the AGATA demonstrator and the large acceptance heavy-ion spectrometer PRISMA at LNL, Italy. A two-nucleon transfer from a 198Pt target to a stable 82Se beam was utilized to populate medium-high spin states of 196Os. The analysis method and preliminary results, including the first life-time measurement of isomeric states with AGATA, are presented.
