B Cheal et al 2003 J. Phys. G: Nucl. Part. Phys. 29 2479 doi:10.1088/0954-3899/29/11/003
B Cheal1, M Avgoulea2, J Billowes2, P Campbell2, K T Flanagan2, D H Forest1, M D Gardner1, J Huikari3, B A Marsh2, A Nieminen3, H L Thayer1, G Tungate1 and J Äystö3
Show affiliationsLaser spectroscopy has been used to measure the isotope shifts of 146Ce and 148Ce relative to 144Ce, Z = 58. The new data, in combination with existing optical data on the stable isotopes and radioactive 144Ce isotope, permits a study of charge radii variations for the even-N Ce nuclei from N = 78 to N = 90. This range covers both the N = 82 shell closure and the N = 88 shape transition region. A marked increase in deformation occurs at N = 88 for elements with Z ≥ 60 but not for those with Z ≤ 56. The new data for Ce (Z = 58) show an intermediate behaviour, resulting in a smooth increase in deformation with Z in the N = 88, 90 region.
27.60.+j 90(less-than-or-equal-to)A(less-than-or-equal-to)149
Issue 11 (November 2003)
Received 15 July 2003
Published 6 October 2003
B Cheal et al 2003 J. Phys. G: Nucl. Part. Phys. 29 2479
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