Nuclear electromagnetic moments and charge radii of deformed thulium isotopes with the mass numbers A = 157-172

Hyperfine structures and isotope shifts of thulium isotopes in the mass range 157-172 have been measured in the atomic transitions 4f136s2-4f125d6s2 (589.565 nm) and 6s2-6s6p (597.13 nm), using resonance ionization spectroscopy at the IRIS facility. Nuclear magnetic dipole and electric quadrupole moments, and the changes in mean square charge radii have been obtained. They are analysed within the framework of the microscopic-macroscopic approach and the Hartree-Fock method, revealing single-particle and collective properties. Some conclusions on effective nucleon-nucleon interactions are drawn. (orig.)