Isotope shifts and hyperfine structures have been measured for radioisotopes of ionic zirconium using on-line laser spectroscopy at the IGISOL facility in Jyvaskyla, where the installation of an ion beam cooler/buncher has significantly improved the experimental sensitivity. Measurements have been made on all the neutron-deficient isotopes from Zr-87 to Zr-90, including the isomers Zr-87m,Zr-89m, and the neutron-rich isotopes from Zr-96 to Zr-102. The change in mean square charge radii between the isotopes and the nuclear moments of the odd isotopes have been extracted. The data show a sudden increase in the mean square charge radius at mass A = 100, consistent with an onset of nuclear deformation which has been observed in the gamma ray spectroscopy of isotope chains in this region of the nuclear chart.
|Number of pages||16|
|Journal||Journal of Physics G: Nuclear and Particle Physics|
|Early online date||4 Aug 2003|
|Publication status||Published - 1 Sep 2003|