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October 20, 2025Open Access

Negative Weights and Weight Cancellation to Treat Anisotropic Scattering in Multigroup Monte Carlo Simulations

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Authors

PSParth SinghHBHunter Belanger

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Overview

This research demonstrates using importance sampling and weight cancellation for handling anisotropic scattering, indicating improved simulation accuracy.

Key Points

  • Using importance sampling with weight cancellation stabilizes Monte Carlo simulations for anisotropic scattering.
  • The technique allows for accurate modeling of multigroup problems, overcoming issues with negative scattering distributions.
  • Testing included analytic benchmark problems and modeling a small zero power reactor for validation.
  • Results provided reference data for comparison with deterministic solvers treating anisotropic scattering.

Cite This Study

Singh et al. (2025) studied this question.

synapsesocial.com/papers/68f5fcd68d54a28a75cf2034https://doi.org/10.48550/arxiv.2503.01984
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