Analysis constants for database of neutron nuclear data

Abstract

At present there is a variety of experimental and calculation nuclear data which arerather entirely presented in the following evaluated nuclear data libraries: ENDF (USA), JEFF(Europe), JENDL (Japan), TENDL (Russian Federation), ROSFOND (Russian Federation).Libraries of nuclear data, used for neutron-physics calculations in programs: Scale (OrigenArp),MCNP, WIMS, MCU, and others. Nevertheless all existing nuclear data bases, includingevaluated ones, contain practically no information about threshold neutron reactions on {232}Thnuclei; available values of outputs and cross-sections significantly differ by orders. The workshows necessity of nuclear constants corrections which are used in the calculations of grids andthorium storage systems. The results of numerical experiments lattices and storage systemswith thorium.