Excited states in the neutron deficient nuclei138Sm and139Eu
Excited states in the two N=76 nuclei138Sm and139Eu have been identified via32S induced reactions on different targets using γ-ray spectroscopy methods. Lifetimes have been measured with the Doppler shift recoil distance technique, showing the coexistence of a large nuclear deformation (β=0.24) with excitations of single particle character. The E2 transition strengths in the odd-even nucleus139Eu and in its core138Sm are discussed.