Comparison of the residual nuclei formation cross sections in the targets 237Np and 241Am at the proton energy 660 MeV with model calculations

237Np and 241Am targets were irradiated by the proton beam with energy 660 MeV. Cross sections of the residual nuclei formation were determined using the induced activity method. The results obtained are compared with the theoretical calculations by nine models realized in the computer codes LAHET, CASCADE, CEM2k+GEM2, LAQGSM+GEM2, CEM2k+GEMINI and LAQGSM+GEMINI. The comparison shows that generally the models employed cannot satisfactorily describe all the measured cross sections. Nevertheless, the models Bertini and ISABEL, included in the code LAHET, show better results