Particle multiplicity prior to fission dependence on the transients

To have a good case for proton emission we studied the de-excitation of the CN /sup 452/Er (E=140 MeV) which is above the stability line. We run the CASCADE code, to extract the absolute widths, for only the first 9 nuclei of the cascade process, namely the ones with the value of Z and N going from (Z,N) (initial CN) to (Z-2, N-1). The results for neutron and proton multiplicities are shown as a function of transient time. With increasing transient time the fission process becomes less competitive, and the neutron multiplicity increases monotonically. In conclusion, calculations show that the proton multiplicity gives an additional constraint on the underlying diffusion model. Furthermore, a simultaneous determination of neutron and proton multiplicities provide an useful tool to determine transient time and thereby β