| Abstract
| - Fission times, pre-scission neutron multiplicities and GDR pre-scission γ-ray multiplicities measured for uranium or thorium nuclei formed with temperatures $T \sim 1.8un{MeV}$ have been compared with calculations performed with CDSM2, a two-dimensional dynamical model combined with a statistical one. Among the three experimental approaches considered, fission times give access to the most precise pieces of information on nuclear dissipation at high excitation energy. A dissipation weaker than the classical one-body dissipation has to be considered to reach an agreement between all the data and the model.
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