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Shape evolution in the neutron-rich osmium isotopes: Prompt gamma-ray spectroscopy of Os-196

John, PR, Modamio, V, Valiente-Dobon, JJ, Mengoni, D, Lunardi, S, Rodriguez, TR, Bazzacco, D, Gadea, A, Wheldon, C, Alexander, T, de Angelis, G, Ashwood, N, Barr, M, Benzoni, G, Birkenbach, B, Bizzeti, PG, Bizzeti-Sona, AM, Bottoni, S, Bowry, M, Bracco, A, Browne, F, Bunce, M, Camera, F, Cederwall, B, Corradi, L, Crespi, FCL, Desesquelles, P, Eberth, J, Farnea, E, Fioretto, E, Goergen, A, Gottardo, A, Grebosz, J, Grente, L, Hess, H, Jungclaus, A, Kokalova, T, Korichi, A, Korten, W, Kusoglu, A, Lenzi, S, Leoni, S, Ljungvall, J, Maron, G, Meczynski, W, Melon, B, Menegazzo, R, Michelagnoli, C, Mijatovic, T, Million, B, Molini, P, Montagnoli, G, Montanari, D, Napoli, DR, Nolan, P, Oziol, C, Podolyak, Z, Pollarolo, G, Pullia, A, Quintana, B, Recchia, F, Reiter, P, Roberts, OJ, Rosso, D, Sahin, E, Salsac, M-D, Scarlassara, F, Sferrazza, M, Simpson, J, Soderstrom, P-A, Stefanini, AM, Stezowski, O, Szilner, S, Theisen, C, Ur, CA and Walshe, J (2014) Shape evolution in the neutron-rich osmium isotopes: Prompt gamma-ray spectroscopy of Os-196 Physical Review C - Nuclear Physics, 90 (2), ARTN 0.

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Abstract

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 rotational behavior towards predominately vibrational nuclei through triaxial configurations. An almost perfect γ-unstable/triaxial rotor yrast band is predicted for 196Os which is in agreement with the experimentally measured excited states

Item Type: Article
Divisions : Faculty of Engineering and Physical Sciences > Physics
Authors :
AuthorsEmailORCID
John, PRUNSPECIFIEDUNSPECIFIED
Modamio, VUNSPECIFIEDUNSPECIFIED
Valiente-Dobon, JJUNSPECIFIEDUNSPECIFIED
Mengoni, DUNSPECIFIEDUNSPECIFIED
Lunardi, SUNSPECIFIEDUNSPECIFIED
Rodriguez, TRUNSPECIFIEDUNSPECIFIED
Bazzacco, DUNSPECIFIEDUNSPECIFIED
Gadea, AUNSPECIFIEDUNSPECIFIED
Wheldon, CUNSPECIFIEDUNSPECIFIED
Alexander, TUNSPECIFIEDUNSPECIFIED
de Angelis, GUNSPECIFIEDUNSPECIFIED
Ashwood, NUNSPECIFIEDUNSPECIFIED
Barr, MUNSPECIFIEDUNSPECIFIED
Benzoni, GUNSPECIFIEDUNSPECIFIED
Birkenbach, BUNSPECIFIEDUNSPECIFIED
Bizzeti, PGUNSPECIFIEDUNSPECIFIED
Bizzeti-Sona, AMUNSPECIFIEDUNSPECIFIED
Bottoni, SUNSPECIFIEDUNSPECIFIED
Bowry, MUNSPECIFIEDUNSPECIFIED
Bracco, AUNSPECIFIEDUNSPECIFIED
Browne, FUNSPECIFIEDUNSPECIFIED
Bunce, MUNSPECIFIEDUNSPECIFIED
Camera, FUNSPECIFIEDUNSPECIFIED
Cederwall, BUNSPECIFIEDUNSPECIFIED
Corradi, LUNSPECIFIEDUNSPECIFIED
Crespi, FCLUNSPECIFIEDUNSPECIFIED
Desesquelles, PUNSPECIFIEDUNSPECIFIED
Eberth, JUNSPECIFIEDUNSPECIFIED
Farnea, EUNSPECIFIEDUNSPECIFIED
Fioretto, EUNSPECIFIEDUNSPECIFIED
Goergen, AUNSPECIFIEDUNSPECIFIED
Gottardo, AUNSPECIFIEDUNSPECIFIED
Grebosz, JUNSPECIFIEDUNSPECIFIED
Grente, LUNSPECIFIEDUNSPECIFIED
Hess, HUNSPECIFIEDUNSPECIFIED
Jungclaus, AUNSPECIFIEDUNSPECIFIED
Kokalova, TUNSPECIFIEDUNSPECIFIED
Korichi, AUNSPECIFIEDUNSPECIFIED
Korten, WUNSPECIFIEDUNSPECIFIED
Kusoglu, AUNSPECIFIEDUNSPECIFIED
Lenzi, SUNSPECIFIEDUNSPECIFIED
Leoni, SUNSPECIFIEDUNSPECIFIED
Ljungvall, JUNSPECIFIEDUNSPECIFIED
Maron, GUNSPECIFIEDUNSPECIFIED
Meczynski, WUNSPECIFIEDUNSPECIFIED
Melon, BUNSPECIFIEDUNSPECIFIED
Menegazzo, RUNSPECIFIEDUNSPECIFIED
Michelagnoli, CUNSPECIFIEDUNSPECIFIED
Mijatovic, TUNSPECIFIEDUNSPECIFIED
Million, BUNSPECIFIEDUNSPECIFIED
Molini, PUNSPECIFIEDUNSPECIFIED
Montagnoli, GUNSPECIFIEDUNSPECIFIED
Montanari, DUNSPECIFIEDUNSPECIFIED
Napoli, DRUNSPECIFIEDUNSPECIFIED
Nolan, PUNSPECIFIEDUNSPECIFIED
Oziol, CUNSPECIFIEDUNSPECIFIED
Podolyak, ZUNSPECIFIEDUNSPECIFIED
Pollarolo, GUNSPECIFIEDUNSPECIFIED
Pullia, AUNSPECIFIEDUNSPECIFIED
Quintana, BUNSPECIFIEDUNSPECIFIED
Recchia, FUNSPECIFIEDUNSPECIFIED
Reiter, PUNSPECIFIEDUNSPECIFIED
Roberts, OJUNSPECIFIEDUNSPECIFIED
Rosso, DUNSPECIFIEDUNSPECIFIED
Sahin, EUNSPECIFIEDUNSPECIFIED
Salsac, M-DUNSPECIFIEDUNSPECIFIED
Scarlassara, FUNSPECIFIEDUNSPECIFIED
Sferrazza, MUNSPECIFIEDUNSPECIFIED
Simpson, JUNSPECIFIEDUNSPECIFIED
Soderstrom, P-AUNSPECIFIEDUNSPECIFIED
Stefanini, AMUNSPECIFIEDUNSPECIFIED
Stezowski, OUNSPECIFIEDUNSPECIFIED
Szilner, SUNSPECIFIEDUNSPECIFIED
Theisen, CUNSPECIFIEDUNSPECIFIED
Ur, CAUNSPECIFIEDUNSPECIFIED
Walshe, JUNSPECIFIEDUNSPECIFIED
Date : 13 August 2014
Identification Number : 10.1103/PhysRevC.90.021301
Uncontrolled Keywords : Science & Technology, Physical Sciences, Physics, Nuclear, Physics, ATOMIC-NUCLEI, TRANSITION, COEXISTENCE, ISOMERS, OS
Related URLs :
Additional Information : Copyright 2014 The American Physical Society.
Depositing User : Symplectic Elements
Date Deposited : 15 Sep 2015 08:27
Last Modified : 15 Sep 2015 08:27
URI: http://epubs.surrey.ac.uk/id/eprint/808397

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