https://doi.org/10.1140/epja/i2006-10201-y
Regular Article - Nuclear Structure and Reactions
Low-lying intrinsic structures in 254Es
Department of Physics, Sri Sathya Sai Institute of Higher Learning, 515134 (A.P), Prasanthinilayam, India
* e-mail: sainath.phy.psn@sssihl.edu.in
Received:
16
September
2006
Accepted:
16
January
2007
Published online:
9
February
2007
Low-lying two-quasiparticle bandhead energies for the Z = 99 odd-odd nucleus 254Es are evaluated using a simple phenomenological model with the inclusion of the residual p-n interaction. Configurations of the intrinsic levels directly fed in 254Es from the parent 258Md are discussed in the light of this model. Our analysis predicts the occurrence of ten K≤5 bandheads in 254Es with excitation energies E x≤300keV. Structures of these as yet unidentified low-lying intrinsic levels and their expected locations are discussed in the light of available experimental information.
PACS: 21.10.-k Properties of nuclei; nuclear energy levels – / 21.10.Hw Spin, parity, and isobaric spin – / 21.60.-n Nuclear structure models and methods – / 27.90.+b Properties of specific nuclei listed by mass ranges: 220≤A –
© Società Italiana di Fisica and Springer-Verlag, 2007
