A calculation of the neutron emission spectra and the neutron number produced by (p, n) reaction for some thick targets composed of heavy elements from 0.5 GeV to 3.0 GeV

The calculation of neutron multiplicity and its energy spectra in (p,n) reactions are very important and necessary for designing and manufacturing the target for an Accelerator Driven System (ADS). The neutron multiplicity in (p,n) reactions on different thin targets with different proton beam energies has been presented in the JENDL-HE library. However, the target used in the ADS must be thick so that the number of neutrons produced is as large as possible. For this reason, we can't directly use the results in the JENDL-HE library. In this paper, we calculate neutron emission spectra and multiplicity in (p,n) reactions for some thick target nuclei including Pb204, Pb206, Pb207, Pb208, W180, W182 W184 W186, U235, U238, Au197 with proton beam energies ranging from 0.5 GeV to 3.0 GeV.