Search for Intrinsic Excitations in 152Sm
  The 685 keV excitation energy of the first excited 0+ state in 152Sm makes it an attractive candidate to explore expected two-phonon excitations at low energy. Multiple-step Coulomb excitation and inelastic neutron scattering studies of 152Sm are used to probe the E2 collectivity of excited 0+ states in this "soft" nucleus and the results are compared with model predictions. No candidates for two-phonon K=0+ quadrupole vibrational states are found. A 2+, K=2 state with strong E2 decay to the first excited K=0+ band and a probable 3+ band member are established. 
W. D. Kulp, J. L. Wood, P. E. Garrett, C. Y. Wu, D. Cline, J. M.   Allmond, D. Bandyopadhyay, D. Dashdorj, S. N. Choudry, A....