Eur. Phys. J. A (2016) 52: 366
https://doi.org/10.1140/epja/i2016-16366-8

Regular Article - Theoretical Physics

Signature effects in 2qp bands of doubly even rare-earth nuclei

¹ Department of Physics, Amity Institute of Applied Sciences (AIAS), Amity University, AUUP, 201303, Noida, India
² Amity Institute of Nuclear Science and Technology (AINST), Amity University, AUUP, 201303, Noida, India
³ Department of Physics, Indian Institute of Technology (IIT), 247667, Roorkee, India

Received: 19 September 2016
Accepted: 29 November 2016
Published online: 22 December 2016

Abstract

The two-quasiparticle rotational bands in deformed doubly even nuclei in the rare-earth region have been studied in detail. A number of interesting features like odd-even staggering and signature inversion have been observed. The phenomenon of signature inversion/reversal is observed experimentally in ¹⁶²  ₆₆Dy, ¹⁷⁰ ₇₀Yb and ¹⁷⁰  ₇₄W in even-even nuclei. Two quasiparticle plus rotor model (TQPRM) calculations are carried out to explain the reverse pattern of signature in ¹⁷⁰  ₇₄W for the rotational band having configuration .