Level structure of Tc-94,Tc-95,Tc-96 at high spins and shell-model calculations - art. no. 024302

High-spin states in the Tc-94,Tc-95,Tc-96 (N = 51, 52, and 53) nuclei have been investigated using the Cu-65 + S-36 reaction at a beam energy of 142 M eV. More than 60 new transitions have been identified and placed in their l evel schemes, which now extend up to spin J approximate to 22 (h) over bar and excitation energies E-x approximate to 12 MeV. Spherical shell-model ca lculations have been performed using different model spaces. A restricted m odel space, using Sr-88 as the core and the pi(p(1/2), g(9/2)) nu(d(5/2), s (1/2)) valence orbitals, reproduces the experimental excitation energies up to J approximate to 14 (h) over bar. The higher-angular-momentum states ar e dominated by the excitation of a g(9/2) neutron across the N = 50 magic c ore, as indicated by large-basis shell model calculations.