Eur. Phys. J. Plus (2015) 130: 117
https://doi.org/10.1140/epjp/i2015-15117-2

Regular Article

ΔI = 1 staggering in signature partner pairs of super-deformed rotational bands in the A = 190 mass region

¹ Amity Institute of Applied Sciences (AIAS), Amity University, 201303, Noida, India
² Amity Institute of Nuclear Science and Technology (AINST), Amity University, 201303, Noida, India

^* e-mail: umakilimanoor@gmail.com

Received: 19 February 2015
Revised: 20 April 2015
Accepted: 15 May 2015
Published online: 23 June 2015

Abstract

Several signature partner pairs in super-deformed rotational bands in the A = 190 mass region have exhibited ΔI = 1 staggering effects in its transition energies. A total of twenty signature partner pairs of super-deformed (SD) rotational bands in the A = 190 mass region were investigated in this study. The intrinsic structure and the band head moment of inertia J ₀ of these signature partner pairs were found to be identical. The band head spin I ₀ and the band head moment of inertia J ₀ of these pairs were assigned by using the VMI (variable moment of inertia) equation. The ΔI = 1 staggering was also examined through the staggering index S(I) formula, where interlinking transition energies between signature partner pairs were experimentally known. A large amplitude staggering was observed in these signature partner pairs. The paper indicates the possibility of a high signature splitting property and will be useful for further studies.