학술논문
Search for the origin of wobbling motion in the $ A \approx 130 $ region: The case of $^{131}$Xe
Document Type
Working Paper
Author
Chakraborty, S.; Bhattacharyya, S.; Banik, R.; Bhattacharya, Soumik; Mukherjee, G.; Bhattacharya, C.; Biswas, S.; Rajbanshi, S.; Dar, Shabir; Nandi, S.; Ali, Sajad; Chatterjee, S.; Das, S.; Gupta, S. Das; Ghugre, S. S.; Goswami, A.; Lemasson, A.; Mondal, Debasish; Mukhopadhyay, S.; Navin, A.; Pai, H.; Pal, Surajit; Pandit, Deepak; Raut, R.; Ray, Prithwijita; Rejmund, M.; Samanta, S.
Source
Phys. Rev. C 107, 064318 (2023)
Subject
Language
Abstract
In-beam $ \gamma $-ray spectroscopy of $^{131}$Xe has been carried out to study the structure of the intruder $ \nu h_{11/2} $ band. Excited states were populated via an $ \alpha $-induced fusion-evaporation reaction at E$ _{\alpha} = 38 $ MeV. Inspection of $ \gamma \gamma $-coincidence data resulted in the identification of a new rotational sequence. Based on the systematics of excitation energy, assigned spin-parity, decay pattern, and the electromagnetic character of the inter-band $ \Delta I = 1 $ $ \gamma $-transitions, this sequence is proposed as the unfavoured signature partner of the $ \nu h_{11/2} $ band. The structure of this band is further illuminated in the light of the triaxial particle rotor model (TPRM). The possibility of wobbling excitation in $ N = 77 $ Xe-Ba-Ce isotones has been explored in a systematic manner.