Collinear laser spectroscopy of neutron-rich cerium isotopes near theN= 88 shape transition

Autor: B. A. Marsh, Paul Campbell, G. Tungate, Jussi Huikari, J. Billowes, D. H. Forest, M. D Gardner, Kieran Flanagan, A. Nieminen, B. Cheal, Juha Äystö, M Avgoulea, H.L. Thayer
Rok vydání: 2003
Předmět:
Zdroj: Journal of Physics G: Nuclear and Particle Physics. 29:2479-2484
ISSN: 1361-6471
0954-3899
DOI: 10.1088/0954-3899/29/11/003
Popis: Laser 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.
Databáze: OpenAIRE