Investigation of multiple anti-magnetic rotational bands in Cd

Diwanshu Diwanshu; Ashok Kumar; Bharti Rohila; Chetan Sharma; Subodh Subodh; Ishika Sharma; P. S. Rawat; Anand Pandey; Kaushik Katre; H. Arora; U. S. Ghosh; Yashraj Yashraj; C. Majumder; H. P. Sharma; S. K. Chamoli; S. Kumar; S. Muralithar; R. P. Singh

doi:10.1140/epja/s10050-025-01525-5

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2024 Impact factor 2.8

Hadrons and Nuclei

Eur. Phys. J. A (2025) 61: 65
https://doi.org/10.1140/epja/s10050-025-01525-5

Regular Article - Experimental Physics

Investigation of multiple anti-magnetic rotational bands in $^{106}$ $^{106}$ Cd

Diwanshu¹, Ashok Kumar¹^a, Bharti Rohila⁷, Chetan Sharma¹, Subodh¹, Ishika Sharma², P. S. Rawat³, Anand Pandey³, Kaushik Katre⁴, H. Arora⁶, U. S. Ghosh⁴, Yashraj⁴, C. Majumder⁵, H. P. Sharma², S. K. Chamoli³, S. Kumar³, S. Muralithar⁴ and R. P. Singh⁴

¹ Department of Physics, Panjab University, 160014, Chandigarh, India
² Department of Physics, Banaras Hindu University, 221005, Varanasi, India
³ Department of Physics and Astrophysics, University of Delhi, 110007, New Delhi, India
⁴ Inter University Accelerator Centre, 110067, New Delhi, India
⁵ Indian Institute of Technology Bombay, 400076, Mumbai, India
⁶ Central Michigan University, 48859, Mt. Pleasant, Michigan, USA
⁷ Department of Physics, Maitreyi College, University of Delhi, 110021, New Delhi, India

^a ashok@pu.ac.in

Received: 4 December 2024
Accepted: 22 February 2025
Published online: 27 March 2025

Abstract

Lifetimes of excited states of positive and negative parity $Δ$ $\Delta$ I = 2 bands of $^{106}$ $^{106}$ Cd have been measured using the Doppler Shift Attenuation Method (DSAM). The electric quadrupole reduced transition probability rates, B(E2), show a significant decreasing trend with increasing spin along with large observed $ℑ^{(2)}$ $\Im ^{(2)}$ /B(E2) values. The experimental observations, interpreted in the framework of semiclassical particle-rotor model (SCM) calculations, suggest that these bands have the character of twin-shears type anti-magnetic rotational bands resulting from the coupling of g $_{9 / 2}$ $_{9/2}$ proton holes with h $_{11 / 2}$ $_{11/2}$ , g $_{9 / 2}$ $_{9/2}$ and d $_{5 / 2}$ $_{5/2}$ neutron particles. Another negative-parity band in the same nucleus has been studied using SCM, which also interprets it to be an anti-magnetic rotational band.

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Communicated by Silvia Leoni.

© The Author(s), under exclusive licence to Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2025

Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.