INTERACTIONS BETWEEN A MULTITUDE OF ROTATIONAL BANDS IN WELL DEFORMED ODD NUCLEI - A NEW METHOD FOR SPIN AND PARITY ASSIGNMENT

摘要

Using the (O-18,5n)Er-163 reaction a multitude of rotational bands have been established with firm spin and parity assignments in Er-163. In 17 out of 24 band crossings E2 cross-band transitions have been observed, The interaction strength varies between similar to 1 and similar to 50 keV with many of the values in the range 10-15 keV. These interactions sample a variety of the lowest (multi) -quasiparticle configurations. For some bands, in particular those with high K-values, the configurations can be established rather well. Quite complicated changes in the wavefunctions must occur at these crossings, and to explain the observed interaction strengths coupling to various vibrational degrees of freedom, in addition to possible residual neutron-proton interactions, may be needed. (C) 1997 Elsevier Science B.V. [References: 26]