Rejection-based sampling of inelastic neutron scattering

X.-X. Cai*, T. Kittelmann, E. Klinkby, J.I. Márquez Damián

*Corresponding author for this work

    Research output: Contribution to journalJournal articleResearchpeer-review

    Abstract

    Distributions of inelastically scattered neutrons can be quantum dynamically described by a scattering kernel. We present an accurate and computationally effcient rejection method for sampling a given scattering kernel of any isotropic material. The proposed method produces continuous neutron energy and angular distributions, typically using just a single interpolation per sampling. We benchmark the results of this method against those from accurate analytical models and one of the major neutron transport codes. We also show the results of applying this method to the conventional discrete double differential cross sections.
    Original languageEnglish
    JournalJournal of Computational Physics
    Volume380
    Pages (from-to)400-407
    Number of pages8
    ISSN0021-9991
    DOIs
    Publication statusPublished - 2019

    Keywords

    • Thermal neutron scattering
    • Monte Carlo simulation
    • Rejection method
    • Isotropic material

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