$β$ decay studies of n-rich Cs isotopes with the ISOLDE Decay Station

Neutron-rich Ba isotopes are expected to exhibit octupolar correlations, reaching their maximum in isotopes around mass A = 146. The odd-A neutron-rich members of this isotopic chain show typical patterns related to non-axially symmetric shapes, which are however less marked compared to even-A ones,...

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Detalles Bibliográficos
Autores principales: Lică, R, Benzoni, G, Morales, A I, Borge, M J G, Fraile, L M, Mach, H, Madurga, M, Sotty, C, Vedia, V, Witte, H De, Benito, J, Berry, T, Blasi, N, Bracco, A, Camera, F, Ceruti, S, Charviakova, V, Cieplicka-Oryńczak, N, Costache, C, Crespi, F C L, Creswell, J, Fernández-Martínez, G, Fynbo, H, Greenlees, P, Homm, I, Huyse, M, Jolie, J, Karayonchev, V, Köster, U, Konki, J, Kröll, T, Kurcewicz, J, Kurtukian-Nieto, T, Lazarus, I, Leoni, S, Lund, M, Marginean, N, Marginean, R, Mihai, C, Mihai, R, Negret, A, Orduz, A, Patyk, Z, Pascu, S, Pucknell, V, Rahkila, P, Regis, J M, Rotaru, F, Saed-Sami, N, Sánchez-Tembleque, V, Stanoiu, M, Tengblad, O, Thuerauf, M, Turturica, A, Duppen, P Van, Warr, N
Lenguaje:eng
Publicado: 2017
Materias:
Nuclear Physics - Experiment
Acceso en línea:https://dx.doi.org/10.1088/1361-6471/aa6015
http://cds.cern.ch/record/2270085
Descripción
Sumario:Neutron-rich Ba isotopes are expected to exhibit octupolar correlations, reaching their maximum in isotopes around mass A = 146. The odd-A neutron-rich members of this isotopic chain show typical patterns related to non-axially symmetric shapes, which are however less marked compared to even-A ones, pointing to a major contribution from vibrations. In the present paper we present results from a recent study focused on $^{148 –150}Cs$ β-decay performed at the ISOLDE Decay Station equipped with fast-timing detectors. A detailed analysis of the measured decay half-lives and decay scheme of $^{149}Ba$ is presented, giving a first insight in the structure of this neutron-rich nucleus.

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