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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, 118 (24), 242501.

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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 :
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
Rudigier, M
Saito, T
Shand, C
Soderstrom, PA
Stefan, I
Vaquero, V
Werner, V
Wimmer, K
Xu, Z
Date : 14 June 2017
DOI : 10.1103/PhysRevLett.118.242501
Copyright Disclaimer : Copyright 2017 American Physical Society
Related URLs :
Depositing User : Symplectic Elements
Date Deposited : 03 May 2017 10:38
Last Modified : 16 Jan 2019 17:14

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