Nuclear Engineering and Technology • Vol 50 • No 3
Development of a fast reactor multigroup cross section generation code EXUS-F capable of direct processing of evaluated nuclear data files
February 2018 • Changhyun Lim, Han Gyu Joo, Won Sik Yang
The methods and performance of a fast reactor multigroup cross section (XS) generation code EXUS-F are described that is capable of directly processing Evaluated Nuclear Data File format nuclear data files. RECONR of NJOY is used to generate pointwise XS data, and Doppler broadening is incorporated by the Gauss–Hermite quadrature method. The self-shielding effect is incorporated in the ultrafine group XSs in the resolved and unresolved resonance ranges. Functions to generate scattering transfer matrices and fissio…