- Clark, RM;
- Crawford, HL;
- Macchiavelli, AO;
- Rudolph, D;
- Såmark-Roth, A;
- Campbell, CM;
- Cromaz, M;
- Fallon, P;
- Morse, C;
- Santamaria, C
The superfluid tunneling model is applied to the calculation of half-lives of the observed α decays in N=84 isotones. Results of our calculations are compared to experimental data on the ground-state α decays along the isotonic chain from Nd144 to Re159. Good agreement is found. The α decays of the known high-spin isomers in Lu155, Hf156, Ta157, and W158 are also well reproduced, once a reduction in the pairing strength is taken into account. This includes reproduction of the main features of the recently observed fine structure from Lu155(25/2-) and Hf156(8+). Predictions for the α-decay fine structure of Ta157(25/2-) and W158(8+) high-spin isomers are presented.