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Featured researches published by G. Neyens.


Reports on Progress in Physics | 2003

Nuclear magnetic and quadrupole moments for nuclear structure research on exotic nuclei

G. Neyens

Some errors were found in this review after it was published. Page 642, line 1: gSchmidt(πd3/2)=0.083 Page 642, paragraph 2.1.3, line 7 and line 12: gSchmidt = -1.913 should read μSchmidt = -1.913 Page 663, expression (4.7) should read: Figure 13 was incorrectly labelled. The correct figure is given below. Figure 13. (a) Zeeman splitting of the nuclear m-quantum levels due to interaction of the nuclear dipole moment (μ = gIμN) with a static magnetic field B. In a classical picture this can be seen as a precession of the spin I around B with a Larmor frequency νL. (b) Non-equidistant quadrupole splitting of the nuclear m-quantum levels due to interaction of the nuclear spectroscopic quadrupole moment Qs with an EFG Vzz. Page 673, expression (5.8) should read:


Physical Review Letters | 2012

Nuclear Charge Radius of 12 Be

A. Krieger; R. Neugart; J. Krämer; G. Neyens; Klaus Blaum; Ch. Novotny; Kim Dieter Kreim; M. Hammen; W. Nörtershäuser; M. L. Bissell; R. Sánchez; Ch. Geppert; D. T. Yordanov; T. Neff; N. Frömmgen; M. Kowalska

The nuclear charge radius of (12)Be was precisely determined using the technique of collinear laser spectroscopy on the 2s(1/2)→2p(1/2,3/2) transition in the Be(+) ion. The mean square charge radius increases from (10)Be to (12)Be by δ(10,12)=0.69(5) fm(2) compared to δ(10,11)=0.49(5) fm(2) for the one-neutron halo isotope ^{11}Be. Calculations in the fermionic molecular dynamics approach show a strong sensitivity of the charge radius to the structure of ^{12}Be. The experimental charge radius is consistent with a breakdown of the N=8 shell closure.


Physical Review Letters | 2008

Precision measurement of 11Li moments: influence of halo neutrons on the 9Li core.

R. Neugart; D.L. Balabanski; Klaus Blaum; D. Borremans; P. Himpe; Magdalena Kowalska; P. Lievens; S. Mallion; G. Neyens; N. Vermeulen; D. T. Yordanov

The electric quadrupole moment and the magnetic moment of the 11Li halo nucleus have been measured with more than an order of magnitude higher precision than before, |Q| = 33.3(5) mb and mu = +3.6712(3)muN, revealing a 8.8(1.5)% increase of the quadrupole moment relative to that of 9Li. This result is compared to various models that aim at describing the halo properties. In the shell model an increased quadrupole moment points to a significant occupation of the 1d orbits, whereas in a simple halo picture this can be explained by relating the quadrupole moments of the proton distribution to the charge radii. Advanced models so far fail to reproduce simultaneously the trends observed in the radii and quadrupole moments of the lithium isotopes.


Physical Review C | 2010

Nuclear spins, magnetic moments, and quadrupole moments of Cu isotopes from N = 28 to N = 46: Probes for core polarization effects

P. Vingerhoets; K. T. Flanagan; M. Avgoulea; J. Billowes; M. L. Bissell; Klaus Blaum; B. A. Brown; B. Cheal; M. De Rydt; D. H. Forest; Christopher Geppert; M. Honma; M Kowalska; J. Krämer; A. Krieger; E. Mané; R. Neugart; G. Neyens; W. Nörtershäuser; Takaharu Otsuka; M. Schug; H. H. Stroke; G. Tungate; D. T. Yordanov

Measurements of the ground-state nuclear spins and magnetic and quadrupole moments of the copper isotopes from


Hyperfine Interactions | 1990

Quadrupole-moments of high-spin isomers studied by level mixing spectroscopy (lems)

F. Hardeman; G. Scheveneels; G. Neyens; R. Nouwen; R. Coussement

^{61}\mathrm{Cu}


Physical Review Letters | 2015

Use of a Continuous Wave Laser and Pockels Cell for Sensitive High-Resolution Collinear Resonance Ionization Spectroscopy.

R.P. de Groote; I. Budinčević; J. Billowes; Mark Bissell; T. E. Cocolios; G. J. Farooq-Smith; Valentin Fedosseev; K. T. Flanagan; S. Franchoo; R.F. Garcia Ruiz; H. Heylen; R. Li; K. M. Lynch; B. A. Marsh; G. Neyens; R.E. Rossel; S. Rothe; H.H. Stroke; K. Wendt; S. G. Wilkins; X. Yang

up to


Journal of Physics G | 2002

g-factor measurements of μs isomeric states in neutron-rich nuclei around 68Ni produced in projectile-fragmentation reactions

Georgi Georgiev; G. Neyens; M. Hass; D. L. Balabanski; C. R. Bingham; C. Borcea; Nico Coulier; R. Coussement; J. M. Daugas; F. de Oliveira Santos; M. Gorska; H. Grawe; R. Grzywacz; M. Lewitowicz; H. Mach; I. Matea; R. D. Page; M. Pfützner; Yu. E. Penionzhkevich; Z. Podolyak; P. H. Regan; K. Rykaczewski; M. Sawicka; Na Smirnova; Yu. G. Sobolev; M. Stanoiu; Stéphanie Teughels; Katrien Vyvey

^{75}\mathrm{Cu}


Physical Review Letters | 2012

Nuclear Charge Radius of 12Be

A. Krieger; Klaus Blaum; M. L. Bissell; N. Frömmgen; Ch. Geppert; M. Hammen; Kim Dieter Kreim; M. Kowalska; J. Krämer; T. Neff; R. Neugart; G. Neyens; W. Nörtershäuser; Ch. Novotny; R. Sánchez; D. T. Yordanov

are reported. The experiments were performed at the CERN online isotope mass separator (ISOLDE) facility, using the technique of collinear laser spectroscopy. The trend in the magnetic moments between the


In: Freeman, Sean . Rutherford Centennial Conference on Nuclear Physics : Rutherford Centennial Conference on Nuclear Physics ; 08 Aug 2011-12 Aug 2011; University of Manchester. UK: Journal of Physics: Conference Series; 2012. | 2012

Development of the CRIS (Collinear Resonant Ionisation Spectroscopy) beam line

T.J. Procter; H. Aghaei-Khozani; J. Billowes; M. L. Bissell; F. Le Blanc; B. Cheal; T. E. Cocolios; K. T. Flanagan; H. Hori; T. Kobayashi; D. Lunney; K. M. Lynch; B. A. Marsh; G. Neyens; J. Papuga; M. M. Rajabali; S. Rothe; G.S. Simpson; A.J. Smith; H.H. Stroke; W. Vanderheijden; K. Wendt

N=28


Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment | 1994

Extension of the level mixing resonance (LMR) method to study the alignment and the quadrupole moment of light exotic projectile fragments

G. Neyens; R. Nouwen; R. Coussement

and

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D. L. Balabanski

Bulgarian Academy of Sciences

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Katrien Vyvey

Katholieke Universiteit Leuven

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M. L. Bissell

Katholieke Universiteit Leuven

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Nico Coulier

Katholieke Universiteit Leuven

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J. M. Daugas

Katholieke Universiteit Leuven

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Stéphanie Teughels

Katholieke Universiteit Leuven

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R. Coussement

Katholieke Universiteit Leuven

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J. Billowes

University of Manchester

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