EFF-2 evaluation for the reaction systems n + (sup 52)Cr, (sup 56)Fe, (sup 58)Ni and (sup 60)Ni. Presented at the International Conference on Nuclear Data for Science and Technology, Juelich, Federal Republic of Germany, 13-17 May 1991.

摘要

The evaluated cross sections for incident energies between 1 and 20 MeV are essentially based on nuclear reaction model calculations. Model parameters were chosen so as to simultaneously reproduce many available experimental data. At low energies the cross sections were taken from other evaluations. Calculations consider the spherical optical model, the statistical compound nucleus model under consideration of angular momentum and parity, the exciton model for first change pre-equilibrium emission of particles and photons and a direct reaction model for in-elastic scattering. The exciton model employed accounted for angular momentum conservation. For each reaction system evaluation comprises the following cross sections: total, elastic, production of light reaction products (photons, neutrons, protons and alphas) and production of heavy reaction products (about 10 residual nuclei for each target). Furthermore included are the energy-angle distributions of the light reaction products and of the heavy reaction products (i.e. the double differential recoil spectra). (author). 34 refs.; 4 figs. (Atomindex citation 23:077173)