Utilization of Continuous Slowing down Theory in Conjunction with Conventional Spatial Calculations

摘要

The separable kernel analogy is used to develop a mechanism to utilize generalized continuous slowing down theory in conventional types of methods for calculating space-dependent spectra. A particular transport code, DTF-IV is modified to operate efficiently based on continuous slowing down theory. It is demonstrated that major reductions in storage requirements are made possible. The modified code is applied to a set of idealized test problems and adapted benchmark problems that deals with the types of difficulties typically encountered in fast reactor analysis. In all cases, good results are achieved both for spectra and for collapsed few-group constants. (ERA citation 06:013894)