https://doi.org/10.1140/epja/i2011-11135-y
Regular Article - Theoretical Physics
On the stability of high-K isomers in the second well of actinide nuclei
1
School of Physics and State Key Laboratory of Nuclear Physics and Technology, Peking University, 100871, Beijing, China
2
Department of Physics, Shanghai Jiao Tong University, 200240, Shanghai, China
3
Center for Theoretical Nuclear Physics, National Laboratory for Heavy Ion Physics, 730000, Lanzhou, China
4
Department of Physics, University of Surrey, GU2 7XH, Guildford, UK
5
AlbaNova University Center, KTH (Royal Institute of Technology), S-106 91, Stockholm, Sweden
* e-mail: p.walker@surrey.ac.uk
Received:
19
August
2011
Accepted:
14
October
2011
Published online:
7
November
2011
Actinide nuclei are found to be good candidates for the formation of high angular momentum, broken-pair excitations in the second minimum of the potential-energy surface. Configuration-constrained calculations of the energy surfaces, including reflection asymmetry, give predictions of the properties of high-K states in the second well. In addition to excitation energies, spins and parities, the calculations indicate increased barriers towards fission, consistent with the extended half-lives observed experimentally.
© SIF, Springer-Verlag Berlin Heidelberg, 2011
