NUSPIN 2017

Wobbling mode is uniquely related to the triaxial shape of nuclei. Based on the variation of the wobbling frequency with angular momentum of the nucleus, the wobbling motion can be further classified into two types: transverse wobbling and longitudinal wobbling [1]. Recent measurements in 135Pr established a transverse wobbling mode at low spin [2]. In the present work, an effort was made to look for the wobbling motion in 133La (N = 76), the isotone of 135Pr using INGA [3]. The longitudinal wobbling nature for 133La nucleus was established from the experimental angular distribution, Directional Correlation from Oriented states (DCO) and polarization measurements and the corresponding theoretical calculations for all the inter-band transitions. A microscopic model, Triaxial Projected Shell Model (TPSM), was employed to explain this transmutation. In addition, the recent experimental results on the angular distribution and polarization measurements for the linking transitions in 129Cs and 131Cs isotopes will be presented for the investigation of the nature of wobbling in these nuclei. References: [1] S. Frauendorf, F. Donau, Phys. Rev. C. 89 (2014) 014322. [2] J.T. Matta, et al. Phys. Rev. Lett. 114 (2015) 082501. [3] R. Palit, et al. Nucl. Instrum. Methods A 680 (2012) 90.