First Indication for Shape Transitions in Neutron-rich Selenium Isotopes

Chen, S, Doornenbal, P, Obertelli, A, Rodrıguez, TR, Authelet, G, Baba, H, Calvet, D, Chateau, F, Corsi, A, Delbart, A et al, Gheller, J-M, Giganon, A, Gillibert, A, Lapoux, V, Motobayashi, T, Niikura, M, Paul, N, Rousse, J-Y, Sakurai, H, Santamaria, C, Steppenbeck, D, Taniuchi, R, Uesaka, T, Ando, T, Arici, T, Blazhev, A, Browne, F, Bruce, AM, Caroll, R, Chung, LX, Cortes, ML, Dewald, M, Ding, B, Flavigny, F, Franchoo, S, Gorska, M, Gottardo, A, Jungclaus, A, Lee, J, Lettmann, M, Linh, BD, Liu, J, Liu, Z, Lizarazo, C, Momiyama, S, Moschner, K, Nagamine, S, Nakatsuka, N, Nita, CR, Nobs, C, Olivier, L, Orlandi, R, Patel, Z, Podolyak, Zsolt, Rudigier, Matthias, Saito, T, Shand, Callum, Soderstrom, PA, Stefan, I, Vaquero, V, Werner, V, Wimmer, K and Xu, Z (2017) First Indication for Shape Transitions in Neutron-rich Selenium Isotopes Physical Review C: Nuclear Physics.

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Abstract

Neutron-rich 88,90,92,94Se isotopes were studied via in-beam γ-ray spectroscopy after production from nucleon removal at intermediate energies at the Radioactive Isotope Beam Factory. γ-γ coincidence analysis allowed to establish level schemes for the first time in these nuclei, including the 2+ 1 → 0 + gs, 4+ 1 → 2 + 1 transitions and their energy ratio R4/2. Low-lying 2+ 2 levels and their branching to the 2+ 1 and 0+ gs states were observed. The experimental results are in good agreement with self-consistent beyond-mean-field calculations based on the Gogny D1S interaction, suggesting ground state shape transition from oblate to prolate then back to oblate between N = 52 − 60 and indicating shape coexistence.

Item Type:	Article
Subjects :	Physics
Divisions :	Faculty of Engineering and Physical Sciences > Physics
Authors :	Name Email ORCID Chen, S UNSPECIFIED UNSPECIFIED Doornenbal, P UNSPECIFIED UNSPECIFIED Obertelli, A UNSPECIFIED UNSPECIFIED Rodrıguez, TR UNSPECIFIED UNSPECIFIED Authelet, G UNSPECIFIED UNSPECIFIED Baba, H UNSPECIFIED UNSPECIFIED Calvet, D UNSPECIFIED UNSPECIFIED Chateau, F UNSPECIFIED UNSPECIFIED Corsi, A UNSPECIFIED UNSPECIFIED Delbart, A UNSPECIFIED UNSPECIFIED Gheller, J-M UNSPECIFIED UNSPECIFIED Giganon, A UNSPECIFIED UNSPECIFIED Gillibert, A UNSPECIFIED UNSPECIFIED Lapoux, V UNSPECIFIED UNSPECIFIED Motobayashi, T UNSPECIFIED UNSPECIFIED Niikura, M UNSPECIFIED UNSPECIFIED Paul, N UNSPECIFIED UNSPECIFIED Rousse, J-Y UNSPECIFIED UNSPECIFIED Sakurai, H UNSPECIFIED UNSPECIFIED Santamaria, C UNSPECIFIED UNSPECIFIED Steppenbeck, D UNSPECIFIED UNSPECIFIED Taniuchi, R UNSPECIFIED UNSPECIFIED Uesaka, T UNSPECIFIED UNSPECIFIED Ando, T UNSPECIFIED UNSPECIFIED Arici, T UNSPECIFIED UNSPECIFIED Blazhev, A UNSPECIFIED UNSPECIFIED Browne, F UNSPECIFIED UNSPECIFIED Bruce, AM UNSPECIFIED UNSPECIFIED Caroll, R UNSPECIFIED UNSPECIFIED Chung, LX UNSPECIFIED UNSPECIFIED Cortes, ML UNSPECIFIED UNSPECIFIED Dewald, M UNSPECIFIED UNSPECIFIED Ding, B UNSPECIFIED UNSPECIFIED Flavigny, F UNSPECIFIED UNSPECIFIED Franchoo, S UNSPECIFIED UNSPECIFIED Gorska, M UNSPECIFIED UNSPECIFIED Gottardo, A UNSPECIFIED UNSPECIFIED Jungclaus, A UNSPECIFIED UNSPECIFIED Lee, J UNSPECIFIED UNSPECIFIED Lettmann, M UNSPECIFIED UNSPECIFIED Linh, BD UNSPECIFIED UNSPECIFIED Liu, J UNSPECIFIED UNSPECIFIED Liu, Z UNSPECIFIED UNSPECIFIED Lizarazo, C UNSPECIFIED UNSPECIFIED Momiyama, S UNSPECIFIED UNSPECIFIED Moschner, K UNSPECIFIED UNSPECIFIED Nagamine, S UNSPECIFIED UNSPECIFIED Nakatsuka, N UNSPECIFIED UNSPECIFIED Nita, CR UNSPECIFIED UNSPECIFIED Nobs, C UNSPECIFIED UNSPECIFIED Olivier, L UNSPECIFIED UNSPECIFIED Orlandi, R UNSPECIFIED UNSPECIFIED Patel, Z UNSPECIFIED UNSPECIFIED Podolyak, Zsolt Z.Podolyak@surrey.ac.uk UNSPECIFIED Rudigier, Matthias m.rudigier@surrey.ac.uk UNSPECIFIED Saito, T UNSPECIFIED UNSPECIFIED Shand, Callum c.shand@surrey.ac.uk UNSPECIFIED Soderstrom, PA UNSPECIFIED UNSPECIFIED Stefan, I UNSPECIFIED UNSPECIFIED Vaquero, V UNSPECIFIED UNSPECIFIED Werner, V UNSPECIFIED UNSPECIFIED Wimmer, K UNSPECIFIED UNSPECIFIED Xu, Z UNSPECIFIED UNSPECIFIED
Date :	27 July 2017
Copyright Disclaimer :	Copyright 2017 American Physical Society
Related URLs :	Publisher
Depositing User :	Symplectic Elements
Date Deposited :	27 Apr 2017 13:33
Last Modified :	20 Jul 2017 13:48
URI:	http://epubs.surrey.ac.uk/id/eprint/814055

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