Shape evolution in the neutron-rich Osmium isotopes: prompt gamma-ray spectroscopy of 196Os (CROSBI ID 207621)
Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija
Podaci o odgovornosti
John, P.R. ; 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, G. ; Birkenbach, B. ; Bizzeti, P.G. ; Bizzeti-Sona, A.M. ; Bottoni, S. ; Bowry, M. ; Bracco, A. ; Browne, F. ; Bunce, M. ; Camera, F. ; Cederwall, B. ; Corradi, L. ; Crespi, F.C.L. ; Desesquelles, P. ; Eberth, J. ; Farnea, E. ; Fioretto, E. ; Gorgen, A. ; Gottardo, A. ; Grebosz, J. ; Grente, L. ; Hess, H. ; Jungclaus, A. ; Kokalova, Tz. ; Korichi, A. ; Korten, W. ; Kusoglu, A. ; Lenzi, S. ; Leoni, S. ; Ljungvall, J. ; Maron, G. ; Meczynski, W. ; Menegazzo, R. ; Michelagnoli, C. ; Mijatovic, Tea ; Million, B. ; Molini, P. ; Montagnoli, G. ; Montanari, D. ; Napoli, D.R. ; Nolan, P. ; Oziol, Ch. ; Podolyak, Zs. ; Pollarolo, G. ; Pullia, A. ; Quintana, B. ; Recchia, F. ; Reiter, P. ; Roberts, O.J. ; Rosso, D. ; Sahin, E. ; Salsac, M.-D. ; Scarlassara, F. ; Sferrazza, M. ; Simpson, J. ; Soderstrom, P.-A. ; Stefanini, A.M. ; Stezowski, O. ; Szilner, Suzana ; Theisen, Ch. ; Ur, C.A. ; Walshe, J.
engleski
Shape evolution in the neutron-rich Osmium isotopes: prompt gamma-ray spectroscopy of 196Os
The shape transition in the neutron-rich Os isotopes is studied by investigating the neutron rich 196Os nucleus through in-beam gamma-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 gamma rays were measured with the 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 behaviour towards predominately vibrational nuclei through triaxial configurations. An almost perfect gamma-unstable/triaxial rotor yrast-band is predicted for 196Os which is in agreement with the experimentally measured excited states.
shape transition; neutron rich nuclei; gamma-ray spectroscopy
Urednici sugeriraju 'Kratko poriopćenje' (Rapid Communication).
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Podaci o izdanju
90
2014.
021301(R)-1-021301(R)-7
objavljeno
0556-2813
10.1103/PhysRevC.90.021301
