Shape Evolution in Neutron-rich Krypton Isotopes beyond N = 60 : First spectroscopy of 98;100Kr

Flavigny, F, Doornenbal, P, Obertelli, A, Delaroche, J-P, Girod, M, Libert, J, Rodriguez, TR, Authelet, G, Baba, H, Calvet, D et al, Chateau, F, Chen, S, Corsi, A, Delbart, A, Gheller, J-M, Giganon, A, Gillibert, A, Lapoux, V, Motobayashi, T, Niikura, M, Paul, N, Rousse, J-Y, Sakura, H, Santamaria, C, Steppenbeck, D, Taniuchi, R, Uesaka, T, Ando, T, Arici, T, Blazhev, A, Browne, F, Bruce, A, Carroll, R, Chung, LX, Cortes, ML, Dewald, M, Ding, B, 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, C, Nobs, CR, Olivier, L, Orlandi, R, Patel, Z, Podolyak, Zsolt, Rudigier, M, Saito, T, Shand, C, Soderstrom, PA, Stefan, I, Vaquero, V, Werner, V, Wimmer, K and Xu, Z (2017) Shape Evolution in Neutron-rich Krypton Isotopes beyond N = 60 : First spectroscopy of 98;100Kr Physical Review Letters, 118 (24), 242501.

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Abstract

We report on the first γ-ray spectroscopy of low-lying states in neutron-rich 98,100Kr isotopes obtained from 99,101Rb(p,2p) reactions at ∼ 220 MeV/nucleon. A reduction of the 2+ 1 state energies beyond N = 60 demonstrates a significant increase of deformation, shifted in neutron number compared to the sharper transition observed in strontium and zirconium isotopes. State-of-theart beyond-mean-field calculations using the Gogny D1S interaction predict level energies in good agreement with experimental results. The identification of a low-lying (0+ 2 , 2+ 2 ) state in 98Kr provides the first experimental evidence of a competing configuration at low energy in neutron-rich krypton isotopes consistent with the oblate-prolate shape coexistence picture suggested by theory

Item Type:	Article
Subjects :	Physics
Divisions :	Faculty of Engineering and Physical Sciences > Physics
Authors :	Name Email ORCID Flavigny, F Doornenbal, P Obertelli, A Delaroche, J-P Girod, M Libert, J Rodriguez, TR Authelet, G Baba, H Calvet, D Chateau, F Chen, S Corsi, A Delbart, A Gheller, J-M Giganon, A Gillibert, A Lapoux, V Motobayashi, T Niikura, M Paul, N Rousse, J-Y Sakura, H Santamaria, C Steppenbeck, D Taniuchi, R Uesaka, T Ando, T Arici, T Blazhev, A Browne, F Bruce, A Carroll, R Chung, LX Cortes, ML Dewald, M Ding, B 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, C Nobs, CR Olivier, L Orlandi, R Patel, Z Podolyak, Zsolt Z.Podolyak@surrey.ac.uk Rudigier, M Saito, T Shand, C Soderstrom, PA Stefan, I Vaquero, V Werner, V Wimmer, K Xu, Z
Date :	14 June 2017
Identification Number :	10.1103/PhysRevLett.118.242501
Copyright Disclaimer :	Copyright 2017 American Physical Society
Related URLs :	Publisher
Depositing User :	Symplectic Elements
Date Deposited :	03 May 2017 10:38
Last Modified :	12 Feb 2018 15:39
URI:	http://epubs.surrey.ac.uk/id/eprint/814097

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