Nuclear moments of germanium isotopes near N=40
| Autor: | L. Xie, Mark Bissell, W. Nörtershäuser, Tim Ratajczyk, S. W. Bai, Klaus Blaum, G. Neyens, Bradley Cheal, S. Malbrunot-Ettenauer, M. L. Reitsma, S. J. Wang, S. Lechner, Xiaofei Yang, A. Kanellakopoulos, Anastasia Borschevsky, R. F. Garcia Ruiz, H. Heylen, Rainer Neugart, S. Kaufmann, L. V. Rodríguez, S. Sels, Deyan Yordanov, J. Billowes, Á. Koszorús, Ziye Xu, C. S. Devlin, Kristian König |
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| Přispěvatelé: | Institut de Physique Nucléaire d'Orsay (IPNO), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), High-Energy Frontier |
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Isotopes of germanium
[PHYS.NUCL]Physics [physics]/Nuclear Theory [nucl-th] chemistry.chemical_element Germanium [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex] Nuclear Structure 01 natural sciences 7. Clean energy 0103 physical sciences Atom Physics::Atomic Physics 010306 general physics Spectroscopy Wave function Hyperfine structure Physics Science & Technology 010308 nuclear & particles physics Nickel Physics Nuclear chemistry Quadrupole Physical Sciences Atomic physics Präzisionsexperimente - Abteilung Blaum |
| Zdroj: | Physical Review C Physical Review C, American Physical Society, 2020, 102 (5), pp.054331. ⟨10.1103/PhysRevC.102.054331⟩ Physical Review C, 102(5):054331. AMER PHYSICAL SOC |
| ISSN: | 2469-9985 2469-9993 |
| Popis: | Collinear laser spectroscopy measurements were performed on $^{69,71,73}$Ge isotopes ($Z = 32$) at ISOLDE-CERN. The hyperfine structure of the $4s^2 4p^2 \, ^3P_1 \rightarrow 4s^2 4p 5s \, ^3P_1^o$ 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 using state-of-the-art atomic relativistic Fock-space coupled-cluster calculations. A new $^{73}$Ge quadrupole moment was determined from these calculations and previously measured precision hyperfine parameters, yielding $Q_{\rm s}$ = $-$0.198(4) b, in excellent agreement with the literature value from molecular calculations. The moments of $^{69}$Ge have been revised: $\mu$ = +0.920(5) $\mu_{N}$ and $Q_{\rm s}$= +0.114(8) b, and those of $^{71}$Ge 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 $N = 40$. |
| Databáze: | OpenAIRE |
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