https://doi.org/10.1140/epja/i2015-15151-7
Regular Article - Theoretical Physics
Nature of 
bands in A=140-180 region, a global analysis
1
Ramjas College, University of Delhi, 110007, Delhi, India
2
Physics Department, Vanderbilt University, 37235, Nashville, TN, USA
* e-mail: jbgupta2011@gmail.com
Received:
11
July
2015
Accepted:
17
October
2015
Published online:
25
November
2015
The nature of band is analyzed in the light of the variation of the 
and 
values, with N and Z, for the 
region. The absolute strengths for the excitation of 
and 
states are studied. Also the roles of 
and 
are discussed. Comparison with the dynamic pairing plus quadrupole model, for all the nuclei studied here, are made on a global basis. The lack of overlap in the wave function amplitudes 
of 
and 
of the ground state also explains the reduced 
strength. The 
is a good measure of the rotational collectivity (deformation) of the band. Shape coexistence at N = 88, 90 nuclei is reviewed. The possibility of 
as a 
-vibration, when allowed by energy, in expected cases is examined. The interacting boson model predictions are also considered as required.
© SIF, Springer-Verlag Berlin Heidelberg, 2015
