@article{939c7351a5174730a1f1b95beb07985e,
title = "Nuclear moments of germanium isotopes near N=40",
abstract = "Collinear laser spectroscopy measurements were performed on Ge69,71,73 isotopes (Z=32) at ISOLDE-CERN. The hyperfine structure of the 4s24p2P13G{\aa}{\AE}4s24p5sP1o3 transition of the germanium atom was probed with laser light of 269 nm, produced by combining the frequency-mixing and frequency-doubling techniques. The hyperfine fields for both atomic levels were calculated by using state-of-the-art atomic relativistic Fock-space coupled-cluster method. A new Ge73 quadrupole moment was determined from these calculations and previously measured precision hyperfine parameters, yielding Qs=-0.198(4) b, in excellent agreement with the literature value from molecular calculations. The moments of Ge69 have been revised: ++=+0.920(5)++N and Qs=+0.114(8)b, and those of Ge71 have been confirmed. The experimental moments around N=40 are interpreted with large-scale shell-model calculations using the JUN45 interaction, revealing rather mixed wave-function configurations, although their g factors are lying close to the effective single-particle values. Through a comparison with neighboring isotones, the structural change from the single-particle nature of nickel to deformation in germanium is further investigated around N=40.",
author = "A. Kanellakopoulos and Yang, \{X. F.\} and Bissell, \{M. L.\} and Reitsma, \{M. L.\} and Bai, \{S. W.\} and J. Billowes and K. Blaum and A. Borschevsky and B. Cheal and Devlin, \{C. S.\} and \{Garcia Ruiz\}, \{R. F.\} and H. Heylen and S. Kaufmann and K. K+¦nig and Koszor and S. Lechner and S. Malbrunot-Ettenauer and R. Neugart and G. Neyens and W. N+¦rtersh+{\~n}user and T. Ratajczyk and Rodr+¡guez, \{L. V.\} and S. Sels and Wang, \{S. J.\} and L. Xie and Xu, \{Z. Y.\} and Yordanov, \{D. T.\}",
note = "Funding Information: We acknowledge the support of the ISOLDE collaboration and technical teams. We would like to acknowledge the Center for Information Technology of the University of Groningen for their support and for providing access to the Peregrine high-performance computing cluster. This work was supported by the National Key R\&D Program of China (Grant No. 2018YFA0404403), the National Natural Science Foundation of China (Grant No. 11875073, U1967201), the BriX Research Program No. P7/12, and FWO-Vlaanderen (Belgium), GOA 15/010 from KU Leuven, the UK Science and Technology Facilities Council grants ST/P004423/1 and ST/P004598/1, the NSF grant PHY-1068217, the BMBF Contracts No 05P18RDCIA and 05P19RDFN1, the Max-Planck Society, the Helmholtz International Center for FAIR (HIC for FAIR), and the EU Horizon 2020 research and innovation programme through ENSAR2 (No. 654002). Publisher Copyright: {\textcopyright} 2020 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.",
year = "2020",
month = nov,
day = "30",
doi = "10.1103/PhysRevC.102.054331",
language = "English",
volume = "102",
journal = "Physical Review C",
issn = "2469-9985",
publisher = "AMER PHYSICAL SOC",
number = "5",
}