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Transition probabilities in neutron-rich 80,82Se and the role of the νg9/2 orbital

Litzinger, J.; Blazhev, A.; Dewald, A.; Didierjean, F.; Duchene, G.; Fransen, C.; Lozeva, R.; Verney, D.; de Angelis, G.; Bazzacco, D.; Birkenbach, B.; Bottoni, S.; Bracco, A.; Braunroth, T.; Cederwall, B.; Corradi, L.; Crespi, F. C. L.; Desesquelles, P.; Eberth, J.; Ellinger, E.; Farnea, E.; Fioretto, E.; Gernhauser, R.; Goasduff, A.; Gorgen, A.; Gottardo, A.; Grebosz, J.; Hackstein, M.; Hess, H.; Ibrahim, F.; Jolie, J.; Jungclaus, A.; Kolos, K.; Korten, W.; Leoni, S.; Lunardi, S.; Maj, A.; Menegazzo, R.; Mengoni, D.; Mengoni, D.; Michelagnoli, C.; Mijatović, Tea; Million, B.; Moller, O.; Modamio, V.; Montagnoli, G.; Montanari, D.; Morales, A. I.; Napoli, D. R.; Niikura, M.; Pietralla, N.; Pollarolo, G.; Pullia, A.; Quintana, B.; Recchia, F.; Reiter, P.; Rosso, D.; Sahin, E.; Salsac, M. D.; Scarlassara, F.; Soderstrom, P.-A.; Stefanini, A. M.; Stezowski, O.; Szilner, Suzana; Theisen, Ch.; Valiente-Dobon, J. J.; Vandone, V.; Vogt, A. (2018) Transition probabilities in neutron-rich 80,82Se and the role of the νg9/2 orbital. Physical review. C. Nuclear physics, 97 (4). ISSN 0556-2813

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Abstract

Transition probabilities of intermediate-spin yrast and non-yrast excitations in 80, 82Se were investigated in a recoil distance Doppler-shift (RDDS) experiment performed at the Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Legnaro. The Cologne Plunger device for deep inelastic scattering was used for the RDDS technique and was combined with the AGATA Demonstrator array for the γ-ray detection and coupled to the PRISMA magnetic spectrometer for an event-by-event particle identification. In 80Se, the level lifetimes of the yrast (6+1) and (8+1) states and of a non-yrast band feeding the yrast 4+1 state are determined. A spin and parity assignment of the head of this sideband is discussed based on the experimental results and supported by large-scale shell-model calculations. In 82Se, the level lifetimes of the yrast 6+1 state and the yrare 4+2 state and lifetime limits of the yrast (10+1) state and of the 5−1 state are determined. Although the experimental results contain large uncertainties, they are interpreted with care in terms of large-scale shell-model calculations using the effective interactions JUN45 and jj44b. The excited states' wave functions are investigated and discussed with respect to the role of the neutron g9/2 orbital.

Item Type: Article
Uncontrolled Keywords: nuclear structure, intermediate-spin yrast and non-yrast excitations
Subjects: NATURAL SCIENCES > Physics
Divisions: Division of Experimental Physics
Projects:
Project titleProject leaderProject codeProject type
Nuklearna struktura i reakcije: eksperimentima prema neutronskoj liniji kapanja-SR-ETNoSuzana SzilnerIP-2013-11-7194HRZZ
Depositing User: Suzana Szilner
Date Deposited: 18 Jul 2018 09:22
Last Modified: 18 Jul 2018 10:34
URI: http://fulir.irb.hr/id/eprint/4100
DOI: 10.1103/PhysRevC.97.044323

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