https://doi.org/10.1140/epja/i2014-14176-8
Regular Article - Theoretical Physics
Nuclear structure of N = 86 isotones of Ce, Nd, Sm and Gd
Ramjas College, University of Delhi, 110 007, Delhi, India
* e-mail: jbgupta2011@gmail.com
Received:
28
June
2014
Revised:
29
October
2014
Accepted:
31
October
2014
Published online:
27
November
2014
The collectivity in the low-energy spectra of N = 86 isotones of Ce, Nd, Sm and Gd is studied vis-à-vis their vibrational band structure. The energy level pattern and the E2 transition rates are compared with the predictions of the microscopic dynamic pairing plus quadrupole model plus 5DCH (Bohr-Mottelson view). The role of the Z = 64 subshell in the increase of ground band level energies with increasing Z , and the different effects on the B(E2) values are illustrated. The subshell energy gap versus the occupation of Nilsson single-particle orbits is discussed. A brief discussion of the different current microscopic collective models is also given.
© SIF, Springer-Verlag Berlin Heidelberg, 2014
