For neutrons, all reactions in a particular cross-section evaluation are accounted for. Criticality sources as well as fixed and surface sources are available. For photons, the code takes account of incoherent and coherent scattering with and without electron binding effects, the possibility of fluorescent emission following photoelectric absorption, and absorption in pair production with local emission of annihilation radiation. A very general source and tally structure is available. The tallies have extensive statistical analysis of convergence.
Rapid convergence is enabled by a wide variety of variance reduction methods.
Executable files for Windows-based PC's are provided for running Pentium computers. MCNP can be compiled with g77 on PC's running Red Hat Linux. Scripts are provided for installation on both PC and Unix systems. The DVF-compiled executable was created with dynamically allocated storage. LF95 Version 5.50 Fortran 90 compiler with Winteracter Starter Kit 10.