https://doi.org/10.1140/epja/s10050-022-00675-0
Regular Article - Theoretical Physics
Excited states and staggering in 
-vibrational band built on the 
orbital of 
Er
High Energy Physics and Astrophysics Laboratory, Department of Physics, Faculty of Sciences Semlalia, Cadi Ayyad University, P.O.B 2390, 40000, Marrakesh, Morocco
Received:
24
October
2021
Accepted:
25
January
2022
Published online:
5
February
2022
An extented Bohr Hamiltonian, by considering the Deformation-Dependent Mass Formalism with three different mass parameters one for each collective mode, is used to investigate the bands structure of the 
Er nucleus. By taking into account the Coriolis interaction, the staggering of 
band energy levels built on the 
orbital obtained within this theoretical approach has a similar behavior to that observed from experiment. E2 transition probabilities are also predicted for a future experimental test.
© The Author(s), under exclusive licence to Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2022. corrected publication 2022
