Abstract
Most computations carried out using the interface current technique make use of the double P0 (DP0) approximation where it is assumed that the neutron current impinging on, or leaving, an external surface associated with a given region has a cosine distribution. A better approximation (the so-called double P1 approximation) consists in assuming an anisotropic flux distribution on external surfaces. This higher order approximation implies that new directional probabilities associated with the anisotropic components of the neutron currents must be computed. Here we propose to compute the double P1 (DP1) transmission probabilities associated with one-dimensional spherical and cylindrical geometries and to use these probabilities to solve the interface current equations. Our analysis will include a comparison of the DP0 and DP1 interface current approximations with the complete collision probabilities method for homogeneous and heterogeneous assemblies.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
