Investigation of odd-even effect in giant dipole resonance width in medium mass nuclei

Study of isovector giant dipole resonance (IVGDR) at finite temperature and increasing angular momentum is one of the most effective tools to know the structural details of excited nuclei. Over the last several years, numerous experiments have been performed to study the temperature and angular momentum dependence of IVGDR width. In parallel, different theoretical models are proposed to extract IVGDR width and understand the role of thermal and pairing fluctuations in the damping mechanism of IVGDR. Statistical thermal shape fluctuation model (TSFM) is one of the successful theoretical framework that explains the temperature dependence of IVGDR width. It has been shown in a recent work that the incorporation of pairing fluctuations is an efficient way to reproduce the low temperature behaviour of IVGDR width. Moreover, for the present calculations, we have considered only axially symmetric shapes to contribute in the broadening of the GDR line shape. A two dimensional calculation incorporating pairing fluctuations at low temperature is under progress