Coulomb Excitation of Proton-rich N=80 Isotones at HIE-ISOLDE

A projectile Coulomb-excitation experiment was performed at the radioactive ion beam facility HIE-ISOLDE at CERN. The radioactive Nd-140 and Sm-142 ions were post accelerated to the energy of 4.62 MeV/A and impinged on a 1.45 mg/cm(2)-thin Pb-208 target. The gamma rays depopulating the Coulomb-excited states were recorded by the HPGe-array MINIBALL. The scattered charged particles were detected by a double-sided silicon strip detector in forward direction. Experimental gamma-ray intensities were used for the determination of electromagnetic transition matrix elements. Preliminary results for the reduced transition strength of the B(M1; 2(3)(+) -> 2(1)(+)) = 0.35(19) mu(2)(N) of Nd-140 and a first estimation for Sm-142 have been deduced using the Coulomb-excitation calculation software GOSIA. The 2(3)(+) states of Nd-140 and Sm-142 show indications of being the main fragment of the proton-neutron mixed-symmetry 2(1,ms)(+) state.