Nuclear charge radii of germanium isotopes around N = 40

Wang SJ, Kanellakopoulos A, Yang XF, Bai SW, Billowes J, Bissell ML, Blaum K, Cheal B, Devlin CS, Garcia Ruiz RF, Han JZ, Heylen H, Kaufmann S, König K, Koszorús , Lechner S, Malbrunot-Ettenauer S, Nazarewicz W, Neugart R, Neyens G, Nörtershäuser W, Ratajczyk T, Reinhard PG, Rodríguez LV, Sels S, Xie L, Xu ZY, Yordanov DT, Yu YM (2024)

Publication Type: Journal article

Publication year: 2024

Journal

Physics Letters B Elsevier

Book Volume: 856

Article Number: 138867

DOI: 10.1016/j.physletb.2024.138867

Abstract

Collinear laser spectroscopy measurements were performed on 68−74Ge isotopes (Z=32) at ISOLDE-CERN, by probing the 4s24p2P13→4s24p5sP1o3 atomic transition (269 nm) of germanium. Nuclear charge radii are determined via the measured isotope shifts, revealing a larger local variation than the neighboring isotopic chains. Nuclear density functional theory with the Fayans functionals Fy(Δr,HFB) and Fy(IVP), and the SV-min Skyrme describes the experimental data for the differential charge radii δ〈r2〉 and charge radii Rc within the theoretical uncertainties. The observed large variation in the charge radii of germanium isotopes is better accounted for by theoretical models incorporating ground state quadrupole correlations. This suggests that the polarization effects due to pairing and deformation contribute to the observed large odd-even staggering in the charge radii of the Ge isotopic chain.

Authors with CRIS profile

Paul-Gerhard Reinhard Naturwissenschaftliche Fakultät

Involved external institutions

The University of Liverpool GB United Kingdom (GB) Massachusetts Institute of Technology (MIT) US United States (USA) (US) Technische Universität Darmstadt DE Germany (DE) University of Manchester GB United Kingdom (GB) Katholieke Universiteit Leuven (KUL) / Catholic University of Leuven BE Belgium (BE) Europäische Organisation für Kernforschung (CERN) CH Switzerland (CH) Michigan State University US United States (USA) (US) Max-Planck-Institut für Kernphysik (MPIK) / Max Planck Institute for Nuclear Physics DE Germany (DE) Peking University (PKU) / 北京大学 CN China (CN) Institut national de physique nucléaire et de physique des particules (IN2P3) FR France (FR) Institute of Physics (IOP) / 中国科学院物理研究所 CN China (CN) Tsinghua University CN China (CN)

How to cite

APA:

Wang, S.J., Kanellakopoulos, A., Yang, X.F., Bai, S.W., Billowes, J., Bissell, M.L.,... Yu, Y.M. (2024). Nuclear charge radii of germanium isotopes around N = 40. Physics Letters B, 856. https://doi.org/10.1016/j.physletb.2024.138867

MLA:

Wang, S. J., et al. "Nuclear charge radii of germanium isotopes around N = 40." Physics Letters B 856 (2024).

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