1. Transitional gamma strength in Cd isotopes
- Author
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Larsen, A. C., Ruud, I. E., Bürger, A., Goriely, S., Guttormsen, M., Görgen, A., Hagen, T. W., Harissopulos, S., Nyhus, H. T., Renstrøm, T., Schiller, A., Siem, S., Tveten, G. M., Voinov, A. V., and Wiedeking, M.
- Subjects
Astrophysics::High Energy Astrophysical Phenomena ,Nuclear Experiment ,Physique atomique et nucléaire - Abstract
The level densities and $\gamma$-ray strength functions of $^{105,106,111,112}$Cd have been extracted from particle-$\gamma$ coincidence data using the Oslo method. The level densities are in very good agreement with known levels at low excitation energy. The $\gamma$-ray strength functions display no strong enhancement for low $\gamma$ energies. However, more low-energy strength is apparent for $^{105,106}$Cd than for $^{111,112}$Cd. For $\gamma$ energies above $\approx$ 4 MeV, there is evidence for some extra strength, similar to what has been previously observed for the Sn isotopes. The origin of this extra strength is unclear; it might be due to $E1$ and $M1$ transitions originating from neutron skin oscillations or the spin-flip resonance, respectively., Comment: 10 pages, 11 figures
- Published
- 2013