still decrease along the fission path (namely due to particle evaporation).

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FIG. 12. Fission-fragment mass distributions obtained for the system $^{227}$Pa ($E^*_{tot} \!=\! 56$ MeV, $L \!=\! 60 \hbar$) with the full ($w \& w$) and a reduced ($0.5 \; w \& w$) friction (see text).\

Confrontation with experimental data
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As the agreement theory-experiment at high excitation energy is quite promising [@PNS00], we would like to compare in the present section our predictions to the available experimental data concerning the fission process of the nucleus $^{227}$Pa synthesized at a total excitation energy of $E^*_{tot} \!=\! 26$ MeV [@CS02]. In the calculations we should obviously take particle evaporation into account. Since we do not have for the moment a complete reliable evaporation theory at our disposal at low temperature we first performed dynamical calculations at higher energy for which we believe that the Weisskopf’s approach is about reasonable. This study showed us that the influence of particle evaporation on the fission fragment mass distribution can be neglected [@CS02]. As the probability of emitting particles decreases with excitation energy [@PBR96], we also expect a really small impact of evaporation on the mass distribution at $26$ MeV. Consequently we compare in 