Development of radiation transport codes for shielding analysis

A variety of discrete ordinates codes have been developed during the past ten years for radiation shielding calculations in rather complicated geometries and also for transport calculations of Bremsstrahlung photons. For more efficient shielding analyses albedo transport codes have been developed and utilized for practical shielding calculations. Point-energy Monte Carlo codes have come to be available during this period for checking the nuclear data and also for detailed analyses of photon transport. (author)