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Physical Review C 86 (2012) 034329
Nuclear mean-square charge radii of Ga-63,Ga-64,Ga-66,Ga-68-82 nuclei: No anomalous behavior at N=32
T. J. Procter, J. Billowes, M. L. Bissell, K. Blaum, F. C. Charlwood, B. Cheal, K. T. Flanagan1, D. H. Forest, S. Fritzsche, C. Geppert, H. Heylen, M. Kowalska, K. Kreim, A. Krieger, J. Kramer, K. M. Lynch, E. Mane, I. D. Moore, R. Neugart, G. Neyens, W. Nortershauser, J. Papuga, M. M. Rajabali, H. H. Stroke, P. Vingerhoets, D. T. Yordanov, M. Zakova

Collinear laser spectroscopy was performed on the Ga-63,Ga-64,Ga-66,Ga-68-82 isotopes with neutron numbers from N = 32 to N = 51. These measurements were carried out at the ISOLDE radioactive ion beam facility at CERN. Here we present the nuclear mean-square charge radii extracted from the isotope shifts and, for the lighter isotopes, new spin and moment values. New ground-state nuclear spin and moments were extracted from the hyperfine spectra of Ga-63,Ga-70, measured on an atomic transition in the neutral atom. The ground-state spin of Ga-63 is determined to be I = 3/2. Analysis of the trend in the change in mean-square charge radii of the gallium isotopes demonstrates that there is no evidence of anomalous charge radii behavior in gallium in the region of N = 32.
1 :  CSNSM - Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse
Physique/Physique Nucléaire Expérimentale