Triaxial Strongly Deformed bands in $^{163}$Tm
ORAL
Abstract
A ``thin'' target experiment and a DSAM lifetime measurement were carried out with the reaction {\it $^{130}$Te($^{37}$Cl,4n)} using Gammasphere at LBNL and at ANL, respectively. It has been confirmed that the two new bands in $^{163}$Tm, interpreted as TSD bands based on particle-hole excitations, are associated with a larger deformation than the yrast sequences. The measured quadrupole transition moments will be compared with those of neighboring nuclei. Further, TAC calculations will be presented. They provide a natural explanation for the presence of wobbling bands in the Lu isotopes and the absence of such bands in all neighboring Tm, Hf and Ta nuclei.
*This work has been supported in part by the U.S. Department of Energy, Office of Nuclear Physics, under contract No. DE-AC02-06CH11357, the U.S. National Science Foundation, and the Department of Science and Technology, Government of India.
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