System size effects on probing nuclear dissipation with neutrons

Using a dynamical Langevin equation coupled with a statistical decay model,we calculate the excess of the pre-scission neutron multiplicities over its standard statistical-model values as a function of the nuclear dissipation strength for the three nuclei 190Os,200Hg,and 210Po which have the same neutron-to-proton ratio N/Z.We find that by decreasing the size of the fissioning nuclei,the effects of nuclear dissipation on the excess of the pre-scission neutron multiplicity are substantially amplified,and tha...