A Estimation Methods of Lower Weight Bound on Neutron Deep Penetration Problem with Monte Carlo Method

Abstract

Typical weight estimation methods with Monte Carlo method such as MCNP default, empirical formula, monoenergy neutron attenuation curve, MCNP Weight Window Generator and adjoint flux are described. The mono-energy neutron attenuation curve method is proposed by authors. Weights estimated by methods by empirical formula and monoenergy neutron attenuation curve are compared with those calculated by MCNP WWG method.