Nuclear charge radii and nuclear moments of neutron deficient Ba isotopes from high resolution laser spectroscopy

Isotope shifts and hyperfine structure of the BaI 6s21S0-6s6p 1P1 transitions (lambda = 553.6 ν/sub n/) in neutron deficient Ba nuclides (N < 82) have been investigated by observing the resonance fluorescense in a well collimated atomic beam with a high resolution tunable CW dye laser. The experiments aimed at information on nuclear charge radii and on nuclear moments. Results are presented for the radioactive isotopes and isomers 133Ba/sup g/, 133Ba/sup m/, 131Ba, 128Ba, in addition to remeasurements of all stable Ba nuclides. The extracted values of delta, the observed odd-even staggering and the nuclear moments are discussed in the light of other theoretical and experimental nuclear structure studies of the region 50 < or = (Z,N) < or = 82