The Production of neutron at design of energy amplifier in the collisions proton-heavy elements

The production of neutron is key parameter for the Accelerator Driven System and the selection of target is one from important matters. By to be used Cascade-Exciton Model, In this study the neutron's numbers and energies have been obtained from collisions with p (proton) energetic from 20 MeV to 1500 MeV of heavy elements (Au, Hg, W, Bi, Pb). Besides the neutron's numbers and these neutron's mean energies induced in stage of cascade, equilibrium and pre-equlibrium have been found. After of spallation different exciton functions and the waste production cross sections of the isotopic elements induced have been calculated. The calculations have been made to be used package codes obtained from NEA (Nuclear Energy Agency) DATA BANK. The found results have been compared with experimental data ensured from literature and examined. Science Code Key Words : Spallation, excition functions, neutron multiplication, cascade-excition model, CEM95