https://doi.org/10.1140/epja/s10050-021-00409-8
Regular Article - Theoretical Physics
Spectral features of nuclear structure of 
1
Ramjas College, University of Delhi, 110007, Delhi, India
2
Physics Department, Vanderbilt University, 37235, Nashville, TN, USA
Received:
28
December
2020
Accepted:
25
February
2021
Published online:
20
March
2021
The light 
Xe isotopes in the 
region, have been studied in the last 4 decades, in experiment and in theory. For (
) region, the evolution of the nuclear structure between the analytical symmetries U(5) and O(6) with neutron number N, is shown to be different for 
and 
. Here we focus on the lighter mass group. The shape transition between U(5) and O(6) symmetry is studied in terms of the variation in quadrupole deformation with N, the variation of the 
-band and the growth of the 
band and 
state. The effect of increasing triaxiality varying with N is illustrated. This variation is also reflected in the B(E2) values and the interband E2 transitions. Also, the role of neutrons filling the Nilsson single particle orbits in changing the spectra is studied. The sd interacting boson model IBM-1 is used to reproduce this spectral evolution. The study of the shape change between the analytical symmetries leads to the underlying basic physics.
© The Author(s), under exclusive licence to Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2021
