Development of High-Energy BROND Library up to 150 MeV

Abstract

The main components of the high-energy BROND library for actinides in the range up to 150 MeV are briefly discussed. The coupled-channel optical model has been used to calculate the neutron total, elastic, and reaction cross sections. The parameters of the optical model have been determined on the basis of available experimental data including the recent precise measurements of the total cross sections for 232 Th and 238 U. Evaluations of fission cross sections, secondary neutron multiplicities and spectra, as well as charged-particle production cross sections are performed in the frame of the statistical model that includes direct, preequilibrium, and equilibrium mechanisms of nuclear reactions. The Kalbach parameterization of angular distributions has been used to describe the double-differential cross sections of emitted neutrons and charged particles in ENDF/B-VI format.