Evidence of a doublet wobbling excitation mode in <math xmlns="http://www.w3.org/1998/Math/MathML"><mmultiscripts><mi>Pd</mi><mprescripts></mprescripts><none></none><mn>105</mn></mmultiscripts></math>

A. Karmakar; P. Datta; N. Rather; S. Pal; R. Palit; A. Goswami; G. H. Bhat; J. A. Sheikh; S. Jehangir; S. Chattopadhyay; S. Frauendorf

doi:10.1103/46gk-nqsh

Evidence of a doublet wobbling excitation mode in ${}^{105}{Pd}$

A. Karmakar ^1,2,*, P. Datta ³, N. Rather ⁴, S. Pal⁵, R. Palit ⁵, A. Goswami^1,†, G. H. Bhat ⁶, J. A. Sheikh ^4,7, S. Jehangir⁴ et al.

S. Chattopadhyay ^1,2,‡ and S. Frauendorf ⁸

¹Saha Institute of Nuclear Physics, 1/AF, Bidhan Nagar, Kolkata 700 064, India
²Homi Bhabha National Institute, Training School Complex, Anushakti Nagar, Mumbai 400 094, India
³Ananda Mohan College, Kolkata 700 009, India
⁴Department of Physics, Islamic University of Science and Technology, Awantipora 192 122, India
⁵Tata Institute of Fundamental Research, Mumbai 400 005, India
⁶Department of Physics, GDC Shopian, Jammu and Kashmir 192 303, India
⁷Department of Physics, University of Kashmir, Srinagar 190 006, India
⁸Department of Physics, University of Notre Dame, Notre Dame, Indiana 46556, USA

^*Present address: Tata Institute of Fundamental Research, Mumbai 400005, India.
^†Deceased.
^‡Contact author: sukalyan.chattopadhyay@saha.ac.in

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Phys. Rev. C 112, 034323 – Published 19 September, 2025

DOI: https://doi.org/10.1103/46gk-nqsh

Abstract

An experimental investigation of ${}^{105}{Pd}$ has revealed, for the first time, the existence of two wobbling bands, both having one phonon configuration and originating from excitation, which is the wobbling from the yrast band with the $h_{11 / 2}$ quasineutron fully aligned with the short axis, and from an excited band with the same quasineutron but with less alignment along the short axis. These observations have been drawn from the measured ratios of the interband and intraband γ-transition rates. Model calculations based on the triaxial projected shell model (TPSM) approach have been performed and are found to be in good agreement with the experimental energies and relative transition probabilities. The analysis of the TPSM results provides an insight into the nature of the observed structures at a microscopic level.

Physical Review C

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Evidence of a doublet wobbling excitation mode in ${}^{105}{Pd}$

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Evidence of a doublet wobbling excitation mode in Pd105

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Evidence of a doublet wobbling excitation mode in ${}^{105}{Pd}$