https://doi.org/10.1140/epja/i2012-12136-0
Regular Article - Theoretical Physics
Level structures in 156Pm from 156Nd β − decay
1
Department of Physics, Sri Sathya Sai Institute of Higher Learning, 515134, Prasanthinilayam, (AP), India
2
Mahaveer Institute of Science and Technology, 500005, Bandlaguda, Hyderabad, (AP), India
3
Department of Physics and Astronomy, McMaster University, L8S 4M1, Hamilton, Ontario, Canada
* e-mail: sood.prakash@gmail.com
Received:
14
August
2012
Accepted:
14
September
2012
Published online:
18
October
2012
Level energies in two-quasiparticle (2qp) structures in 156 61Pm95 are evaluated using the phenomenological rotor-particle model for odd-odd deformed nuclei with the inclusion of the residual p-n interaction contribution. Using these results as location guides, the experimental data from a recent 156Nd decay study are used to construct a level scheme for 156Pm with excitation energies upto 550 keV, wherein 26 (out of 30) γ’s reported in 156Nd decay are incorporated. Spin-parities and configuration assignments are suggested for 15 levels, in addition to the two isomers, in this energy domain. These investigations point to the need for information on higher-energy γ’s and on β-γ and γ-γ coincidence data from 156Nd β-decay to confirm these assignments.
© SIF, Springer-Verlag Berlin Heidelberg, 2012
