arXiv:nucl-th/0001015·v2·Nuclear Theory
Light-particle emission from the fissioning nuclei 126Ba, 188Pt and (266,272,278)/110: theoretical predictions and experimental results
K. Pomorski · B. Nerlo-Pomorska · A. Surowiec · M. Kowal (Univ. MCS, Lublin, Poland) · J. Bartel (IReS) · K. Dietrich (TUM) · J. Richert (LPT-ULP) · C. Schmitt (IReS) · B. Benoit(ULB, IReS) E. de Goes Brennand (ULB) · L. Donadille (Univ. Birmingham) · C.Badimon (CENBG)
Abstract
We present a comparison of our model treating fission dynamics in conjunction with light-particle (n, p, alpha) evaporation with the available experimental data for the nuclei 126Ba, 188Pt and three isotopes of the element Z=110. The dynamics of the symmetric fission process is described through the solution of a classical Langevin equation for a single collective variable characterizing the nuclear deformation along the fission path. A microscopic approach is used to evaluate the emission rates for pre-fission light particles. Entrance-channel effects are taken into account by generating an initial spin distribution of the compound nucleus formed by the fusion of two deformed nuclei with different relative orientations.