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Event-by-Event Fission Modeling with FREYA

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Compound-Nuclear Reactions

Part of the book series: Springer Proceedings in Physics ((SPPHY,volume 254))

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Abstract

For many years, the state of the art for treating fission in radiation transport codes has involved sampling from average distributions, limiting their utility for correlated observables. Recently, several Monte Carlo codes have become available that calculate complete fission events, making it possible to retain the complete kinematic information on the fragments, neutrons, and photons resulting from each fission event and thus extract any desired observables, including correlations. The fast event-by-event fission code FREYA (Fission Reaction Event Yield Algorithm) generates large samples of complete fission events while employing only a few physics-based parameters. We compare our FREYA results with available data on prompt photon emission and we discuss recent results on parameter optimization and validation.

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References

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Acknowledgements

The work of R.V. was performed under the auspices of the U.S. Department of Energy by Lawrence Livermore National Laboratory under Contract DE-AC52-07NA27344. The work of J.R. and L.A.B. was performed under the auspices of the U.S. Department of Energy by Lawrence Berkeley National Laboratory under Contract DE-AC02-05CH11231. This work was supported by the Office of Defense Nuclear Nonproliferation Research & Development (DNN R&D), National Nuclear Security Administration, U.S. Department of Energy.

Author information

Authors and Affiliations

  1. Nuclear and Chemical Sciences Division, Lawrence Livermore National Laboratory, Livermore, CA, USA

    R. Vogt

  2. Physics Department, University of California at Davis, Davis, CA, USA

    R. Vogt

  3. Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, CA, USA

    J. Randrup

  4. Physics Department, University of California at Berkeley, Berkeley, CA, USA

    J.  T. Van Dyke

  5. Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, CA, USA

    L. A. Bernstein

  6. Nuclear Engineering Department, University of California at Berkeley, Berkeley, CA, USA

    L. A. Bernstein

Authors
  1. R. Vogt
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  2. J. Randrup
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  3. J.  T. Van Dyke
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  4. L. A. Bernstein
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Corresponding author

Correspondence to R. Vogt .

Editor information

Editors and Affiliations

  1. Lawrence Livermore National Laboratory, Livermore, CA, USA

    Jutta Escher

  2. Department of Physics, Yale University, New Haven, CT, USA

    Yoram Alhassid

  3. Lawrence Berkeley National Laboratory, Berkeley, CA, USA

    Lee A. Bernstein

  4. National Nuclear Data Center, Brookhaven National Laboratory, Upton, NY, USA

    David Brown

  5. North Carolina State University, Raleigh, NC, USA

    Carla Fröhlich

  6. Los Alamos National Laboratory, Los Alamos, NM, USA

    Patrick Talou

  7. Lawrence Livermore National Laboratory, Livermore, CA, USA

    Walid Younes

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© 2021 This is a U.S. government work and not under copyright protection in the U.S.; foreign copyright protection may apply

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Vogt, R., Randrup, J., Dyke, J. .V., Bernstein, L.A. (2021). Event-by-Event Fission Modeling with FREYA . In: Escher, J., et al. Compound-Nuclear Reactions . Springer Proceedings in Physics, vol 254. Springer, Cham. https://doi.org/10.1007/978-3-030-58082-7_37

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