Spins, moments and mean square charge radii of 104-127In determined by laser spectroscopy

Hyperfine structures and isotope shifts of indium isotopes in the mass range 104-127 have been measured in the atomic transitions 5p 2P1/2-6s 2S1/2 (410 nm) and 5p 2P3/2-6s 2S1/2 (451 nm) by collinear fast-beam laser spectroscopy. Nuclear magnetic dipole and electric quadrupole moments have been determined for 37 ground and isomeric states. The magnetic moments in the sequence of the 1/2- isomers are found to cross the Schmidt limit. Magnetic dipole and electric quadrupole moments of the odd-odd isotopes are compared to values obtained by additivity rules. The 8- isomers exhibit a strong change in the coupling of the h11/2 neutrons to the collective motion. The mean square charge radii show a parabolic behavior with a maximum in the middle of the neutron shell at N=66. This is interpreted by collective effects, which are considerably stronger than seen in the quadrupole moments or in the B(E2) values of neighbouring doubly-even nuclides. (orig.)