Microscopic insight into the structure of negative parity yrast bands in Pd99-117 isotopes

The negative parity bands in the odd-mass Palladium (Pd) nuclei in mass region A similar to 110 are known to be built on the deformation-driving h(11/2) neutron orbital. They offer rich testing grounds for the present day models as well as provide good base to study the deformation systematics of this mass region along with the other nuclear structure properties. Motivated by this, we have taken up the study of odd-mass isotopic chain of Pd99-117 by applying the theoretical framework of the Projected Shell Model. The results are obtained for the negative parity yrast cascades in these nuclei as well as the on the reduced electric transition probabilities. The quasi-particle structure of these bands has been understood in terms of the band diagrams in which the rotational phenomenon like band-crossing is also discussed. The E-GOS plots along with the R-2/1 and R-3/2 ratios predict the quasi-deformed structure for these bands. (C) 2021 Elsevier B.V. All rights reserved.