Search for the origin of wobbling motion in the $ A \approx 130 $ region: The case of $^{131}$Xe
S. ChakrabortyS. BhattacharyyaR. BanikSoumik BhattacharyaG. MukherjeeC. BhattacharyaS. BiswasS. RajbanshiShabir DarS. NandiSajad AliS. ChatterjeeS. DasS. Das GuptaS. S. Ghugre
S. ChakrabortyS. BhattacharyyaR. Banik
...+23
S. Samanta
Nov 2023
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摘要原文
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.
