Complete files of neutron- and proton-induced nuclear data to 1 GeV for 208Pb targetOleg Grudzevich1, Julia Martirosyan1 and Sergey Yavshits2
1 State Technical University, Obninsk, Russia
2 Khlopin Radium Institute, St. Petersburg, Russia
Published online: 21 May 2008
Nuclear data for high projectile energies are needed to design an Accelerator Driven System (target, material activation, heating, shielding, etc.). The files of evaluated neutron and proton nuclear data were created in ENDF-6 format for the projectile particle energies from 20 MeV to 1000 MeV. The evaluated data of the files are based mainly on the modern theoretical model calculations with MCFx code. Three mechanism of nuclear reaction were modeled in computing: i) intranuclear cascade; ii) preequilibrium exciton multiparticle emission and iii) statistical decay of excited nuclei. The experimental data available were used to benchmark of the model calculation results. The data on neutron total and reaction cross sections were used to create and to check the set of the optical model parameters in wide energy region. The experimental spectra of 208Pb(p,xn) reaction for projectile energies up to 160 MeV were described with one set of the model parameter. The measured fission cross sections of 208Pb by protons and neutrons were described without fitting practically. The files contain total cross sections, fission cross sections, elastic scattering cross sections and angular distributions, proton- and neutron energy-angular distributions.
© CEA 2008