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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 , 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 :
NameEmailORCID
Flavigny, FUNSPECIFIEDUNSPECIFIED
Doornenbal, PUNSPECIFIEDUNSPECIFIED
Obertelli, AUNSPECIFIEDUNSPECIFIED
Delaroche, J-PUNSPECIFIEDUNSPECIFIED
Girod, MUNSPECIFIEDUNSPECIFIED
Libert, JUNSPECIFIEDUNSPECIFIED
Rodriguez, TRUNSPECIFIEDUNSPECIFIED
Authelet, GUNSPECIFIEDUNSPECIFIED
Baba, HUNSPECIFIEDUNSPECIFIED
Calvet, DUNSPECIFIEDUNSPECIFIED
Chateau, FUNSPECIFIEDUNSPECIFIED
Chen, SUNSPECIFIEDUNSPECIFIED
Corsi, AUNSPECIFIEDUNSPECIFIED
Delbart, AUNSPECIFIEDUNSPECIFIED
Gheller, J-MUNSPECIFIEDUNSPECIFIED
Giganon, AUNSPECIFIEDUNSPECIFIED
Gillibert, AUNSPECIFIEDUNSPECIFIED
Lapoux, VUNSPECIFIEDUNSPECIFIED
Motobayashi, TUNSPECIFIEDUNSPECIFIED
Niikura, MUNSPECIFIEDUNSPECIFIED
Paul, NUNSPECIFIEDUNSPECIFIED
Rousse, J-YUNSPECIFIEDUNSPECIFIED
Sakura, HUNSPECIFIEDUNSPECIFIED
Santamaria, CUNSPECIFIEDUNSPECIFIED
Steppenbeck, DUNSPECIFIEDUNSPECIFIED
Taniuchi, RUNSPECIFIEDUNSPECIFIED
Uesaka, TUNSPECIFIEDUNSPECIFIED
Ando, TUNSPECIFIEDUNSPECIFIED
Arici, TUNSPECIFIEDUNSPECIFIED
Blazhev, AUNSPECIFIEDUNSPECIFIED
Browne, FUNSPECIFIEDUNSPECIFIED
Bruce, AUNSPECIFIEDUNSPECIFIED
Carroll, RUNSPECIFIEDUNSPECIFIED
Chung, LXUNSPECIFIEDUNSPECIFIED
Cortes, MLUNSPECIFIEDUNSPECIFIED
Dewald, MUNSPECIFIEDUNSPECIFIED
Ding, BUNSPECIFIEDUNSPECIFIED
Franchoo, SUNSPECIFIEDUNSPECIFIED
Gorska, MUNSPECIFIEDUNSPECIFIED
Gottardo, AUNSPECIFIEDUNSPECIFIED
Jungclaus, AUNSPECIFIEDUNSPECIFIED
Lee, JUNSPECIFIEDUNSPECIFIED
Lettmann, MUNSPECIFIEDUNSPECIFIED
Linh, BDUNSPECIFIEDUNSPECIFIED
Liu, JUNSPECIFIEDUNSPECIFIED
Liu, ZUNSPECIFIEDUNSPECIFIED
Lizarazo, CUNSPECIFIEDUNSPECIFIED
Momiyama, SUNSPECIFIEDUNSPECIFIED
Moschner, KUNSPECIFIEDUNSPECIFIED
Nagamine, SUNSPECIFIEDUNSPECIFIED
Nakatsuka, NUNSPECIFIEDUNSPECIFIED
Nita, CUNSPECIFIEDUNSPECIFIED
Nobs, CRUNSPECIFIEDUNSPECIFIED
Olivier, LUNSPECIFIEDUNSPECIFIED
Orlandi, RUNSPECIFIEDUNSPECIFIED
Patel, ZUNSPECIFIEDUNSPECIFIED
Podolyak, ZsoltZ.Podolyak@surrey.ac.ukUNSPECIFIED
Rudigier, MUNSPECIFIEDUNSPECIFIED
Saito, TUNSPECIFIEDUNSPECIFIED
Shand, CUNSPECIFIEDUNSPECIFIED
Soderstrom, PAUNSPECIFIEDUNSPECIFIED
Stefan, IUNSPECIFIEDUNSPECIFIED
Vaquero, VUNSPECIFIEDUNSPECIFIED
Werner, VUNSPECIFIEDUNSPECIFIED
Wimmer, KUNSPECIFIEDUNSPECIFIED
Xu, ZUNSPECIFIEDUNSPECIFIED
Date : 3 August 2017
Copyright Disclaimer : Copyright 2017 American Physical Society
Related URLs :
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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