Investigating the large deformation of the 5/2<SUP>+</SUP> isomeric state in <SUP>73</SUP>Zn: An indicator for triaxiality



Yang, XF, Tsunoda, Y, Babcock, C, Billowes, J, Bissell, ML, Blaum, K, Cheal, B, Flanagan, KT, Ruiz, RF Garcia, Gins, W
et al (show 16 more authors) (2018) Investigating the large deformation of the 5/2<SUP>+</SUP> isomeric state in <SUP>73</SUP>Zn: An indicator for triaxiality. PHYSICAL REVIEW C, 97 (4).

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Abstract

Recently reported nuclear spins and moments of neutron-rich Zn isotopes measured at ISOLDE-CERN [C. Wraith et al., Phys. Lett. B 771, 385 (2017)PYLBAJ0370-269310.1016/j.physletb.2017.05.085] show an uncommon behavior of the isomeric state in Zn73. Additional details relating to the measurement and analysis of the Zn73m hyperfine structure are addressed here to further support its spin-parity assignment 5/2+ and to estimate its half-life. A systematic investigation of this 5/2+ isomer indicates that significant collectivity appears due to proton/neutron E2 excitations across the proton Z = 28 and neutron N = 50 shell gaps. This is confirmed by the good agreement of the observed quadrupole moments with large scale Monte Carlo shell model calculations. In addition, potential energy surface calculations in combination with T plots reveal a triaxial shape for this isomeric state.

Item Type: Article
Depositing User: Symplectic Admin
Date Deposited: 24 May 2018 09:39
Last Modified: 10 Oct 2023 20:26
DOI: 10.1103/PhysRevC.97.044324
Open Access URL: https://doi.org/10.1103/PhysRevC.97.044324
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URI: https://livrepository.liverpool.ac.uk/id/eprint/3021702