PRIMARY IONIZATION DISTRIBUTION CREATED BY FISSION FRAGMENTS IN THE FISSION CHAMBERS

Abstract

This study provides the distribution formulas of ion-electron pairs formed by fission fragments of 235U nucleus in the working space of the fission chamber for the case of cylindrical fission chamber and flat fission chamber. Distribution formulas of ion-electron pairs have been proposed that allow the calculation of the primary ionization density at every point in the working space of the fission chamber. Formula setting of the distribution is carried out using mathematical and physical simulation methods of the interaction processes between neutrons and fissile material, as well as mathematical tools of the Mathematica program. The dependence of the primary density of electron - ion pairs on the radial distance to the fissile layer, created a typical fission fragment - ion Sr in the center of the chamber and the spatial distribution of the initial density of ion pairs along the chamber have been studied.