In a fusion-evaporation reaction the total gamma-energy and multiplicity after particle evaporation - the so-called entry distribution - can be used to estimate the height of the fission barrier as function of angular momentum. This method is especially favorable for unstable nuclei, for which the fission barrier is otherwise very difficult to measure. Here, we have measured the entry distributions of 220Th at beam energies of 206 MeV and 219.5 MeV in the 176Yb(48Ca,4n) reaction. The results are compared to a previous measurement using photofission.
All Science Journal Classification (ASJC) codes
- Nuclear and High Energy Physics