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.

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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 UNSPECIFIED UNSPECIFIED Doornenbal, P UNSPECIFIED UNSPECIFIED Obertelli, A UNSPECIFIED UNSPECIFIED Delaroche, J-P UNSPECIFIED UNSPECIFIED Girod, M UNSPECIFIED UNSPECIFIED Libert, J UNSPECIFIED UNSPECIFIED Rodriguez, TR UNSPECIFIED UNSPECIFIED Authelet, G UNSPECIFIED UNSPECIFIED Baba, H UNSPECIFIED UNSPECIFIED Calvet, D UNSPECIFIED UNSPECIFIED Chateau, F UNSPECIFIED UNSPECIFIED Chen, S 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 Sakura, 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, A UNSPECIFIED UNSPECIFIED Carroll, R UNSPECIFIED UNSPECIFIED Chung, LX UNSPECIFIED UNSPECIFIED Cortes, ML UNSPECIFIED UNSPECIFIED Dewald, M UNSPECIFIED UNSPECIFIED Ding, B 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, C UNSPECIFIED UNSPECIFIED Nobs, CR UNSPECIFIED UNSPECIFIED Olivier, L UNSPECIFIED UNSPECIFIED Orlandi, R UNSPECIFIED UNSPECIFIED Patel, Z UNSPECIFIED UNSPECIFIED Podolyak, Zsolt Z.Podolyak@surrey.ac.uk UNSPECIFIED Rudigier, M UNSPECIFIED UNSPECIFIED Saito, T UNSPECIFIED UNSPECIFIED Shand, C UNSPECIFIED 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 :	3 August 2017
Copyright Disclaimer :	Copyright 2017 American Physical Society
Related URLs :	Publisher
Depositing User :	Symplectic Elements
Date Deposited :	03 May 2017 10:38
Last Modified :	11 Jul 2017 15:34
URI:	http://epubs.surrey.ac.uk/id/eprint/814097

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