Shape evolution in the neutron-rich osmium isotopes: Prompt γ-ray spectroscopy of Os 196
- John, Philipp Rudolf
- Modamio, V
- Valiente-Dobon, J.J.
- Mengoni, D
- Lunardi, S.
- Rodriguez, T.R.
- Bazzacco, D.
- Gadea, A
- Wheldon, C
- Alexander, T
- De Angelis, G.
- Ashwood, N.
- Barr, M
- Benzoni, Giovanna
- Birkenbach, B
- Bizzetti, PG
- Bizzetti-Sona, AM
- Bottoni, S.
- Bowry, M
- Bracco, Angela
- Browne, F
- Bunce, M
- Camera, F.
- Cederwall, B
- Corradi, Lorenzo
- Crespi, Fabio Celso Luigi
- Désesquelles, Pierre
- Eberth, J
- Farnea, E.
- Fioretto, E.
- Görgen, Andreas
- Gottardo, A
- Grebosz, J
- Grente, L
- Hess, H
- Jungclaus, A
- Kokalova, Tz
- Korichi, Ahmed
- Korten, W.
- Kusoglu, A
- Lenzi, S.M.
- Leoni, S.
- Ljungvall, J
- Maron, G.
- Meczynski, W
- Melon, Barbara
- Menegazzo, R.
- Michelagnoli, C
- Mijatovic, T.
- Million, B.
- Molini, P
- Montagnoli, G.
- Montanari, D
- Napoli, D
- Nolan, P M
- Oziol, Ch.
- Podolyak, Zs.
- Pollarolo, G
- Pullia, Alberto
- Quintana, B.
- Recchia, F
- Reiter, P.
- Roberts, Oliver O.J.
- Rosso, D
- Sahin, E
- Salsac, M-.D
- Scarlassara, Fernando
- Sferrazza, Michele
- Simpson, J.
- Soderstrom, P.-A.
- Stefanini, A.M.
- Stezowski, O
- Szilner, Suzana
- Theisen, Ch
- Ur, C.A.
- Walshe, J.
DOIAbstract
The shape transition in the neutron-rich Os isotopes is studied by investigating the neutron-rich 196Os nucleus through in-beam γ-ray spectroscopy using a two-proton transfer reaction from a 198Pt target to a 82Se beam. The beam-like recoils were detected and identified with the large-acceptance magnetic spectrometer PRISMA, and the coincident γ rays were measured with the advanced gamma tracking array (AGATA) demonstrator. The de-excitation of the low-lying levels of the yrast-band of 196Os were identified for the first time. The results are compared with state-of-the-art beyond-mean-field calculations, performed for the even-even 188-198Os isotopes. The new results suggest a smooth transition in the Os isotopes from a more axial rotationa...
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