Ground state band of 140Gd has been investigated following their population in the 112Sn(35Cl,~αp2n)140Gd reaction at 195 MeV of beam energy using a large array of Compton suppressed HPGe clovers as the detection setup. Apart from other spectroscopic measurements, level lifetimes of the states have been extracted using the Doppler Shift Attenuation Method. Extracted quadrupole moment along with the pairing independent cranked Nilsson-Strutinsky model calculations for the quadrupole band reveal that the nucleus preferably attains triaxiality with γ = -30∘. The calculation though shows a slight possibility of rotation around the longest possible principal axis at high spin ∼ 30ℏ which is beyond the scope of the present experiment.
@article{arxiv.2209.08905,
title = {Shape evolution in the rapidly rotating $^{140}$Gd nucleus},
author = {H. Pai and S. Rajbanshi and Somnath Nag and Sajad Ali and R. Palit and G. Mukherjee and F. S. Babra and R. Banik and Soumik Bhattacharya and S. Biswas and S. Chakraborty and R. Donthi and S. Jadhav and Md. S. R. Laskar and B. S. Naidu and S. Nandi and A. Goswami},
journal= {arXiv preprint arXiv:2209.08905},
year = {2022}
}