Study of neutron-rich Mo isotopes by the projected shell model approach

摘要

The projected shell model (PSM) calculations have been performed for the neutron-rich evena€“even 102a?’110Mo and odda€“even 103a?’109Mo isotopes. The present calculation reproduces the available experimental data on the yrast bands. In case of evena€“even nuclei, the structure of yrast bands is analysed and electromagnetic quantities are compared with the available experimental data. The e?‘”-factors have been predicted for high spin states. For the odd-neutron nuclei, the structures of yrast positive- and negative-parity bands are analysed and found to be in reasonable agreement with the experiments for 103a?’107Mo. The disagreement of the calculated and observed plots for energy staggering quantity clearly establishes the occurrence of sizable triaxiality in 103,105Mo and also predicts a decrease in the quantum of triaxiality with increasing neutron number and angular momentum for odd mass neutron-rich Mo isotopes.