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1. Commits on Sep 27, 2026

   • Add XDG support for unstructured mesh tallies (#3889)

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2. Commits on Sep 10, 2026

   • Reset settings leaked across openmc_finalize() (#4122)

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     GuySten

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     claude

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3. Commits on Sep 1, 2026

   • Replace the IFP parameter enum with independent flags (#4094)

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   • Reset temperature range data to original values (#4092)

     GuySten

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4. Commits on May 20, 2026

   • Shared Secondary Particle Bank (#3863)

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5. Commits on May 9, 2026

   • Implement DecaySpectrum distribution type and utilize in R2S (#3930)

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     paulromano

     and

     Copilot

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6. Commits on Mar 13, 2026

   • Add properties to settings w/ documentation, c++ loading of filename, and python round-trip test (#3808)

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7. Commits on Mar 4, 2026

   • Implement surface flux tallies (#3742)

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     GuySten

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     paulromano

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8. Commits on Feb 17, 2026

   • Replace xtensor with internal Tensor/View classes (#3805)

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     jtramm

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     John Tramm

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9. Commits on Feb 8, 2026

   • Install parallel h5py with no build isolation (#3782)

     paulromano

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10. Commits on Feb 6, 2026

    • C-API bindings for key random ray functions (#3749)

      nuclearkevin

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11. Commits on Dec 12, 2025

    • Add a command-line argument for output verbosity (#3680)

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      nuclearkevin

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      paulromano

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12. Commits on Nov 13, 2025

    • Addition of a collision tracking feature (#3417)

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      saliba170499

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      paulromano

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13. Commits on Oct 15, 2025

    • Ability to source electron/positrons directly (#3404)

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      GuySten

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      paulromano

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14. Commits on Oct 6, 2025

    • Add user setting for free gas threshold (#3593)

      paulromano

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15. Commits on Sep 19, 2025

    • Combing for fission site sampling, and delayed neutron emission time (#2992)

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      3 peopleauthored
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16. Commits on Jul 30, 2025

    • Fixed a bug in distribcell offsets logic (#3424)

      GuySten

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17. Commits on Jul 22, 2025

    • Update DAGMC and libMesh precompiler definitions (#3510)

      pshriwise

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18. Commits on Jun 11, 2025

    • Add user setting for source rejection fraction (#3433)

      paulromano

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19. Commits on Apr 14, 2025

    • Kinetics parameters using Iterated Fission Probability (#3133)

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      JoffreyDorville

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      paulromano

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20. Commits on Mar 7, 2025

    • Random Ray Source Region Mesh Subdivision (Cell-Under-Voxel Geometry) (#3333)

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      jtramm

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      paulromano

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21. Commits on Mar 4, 2025

    • Implement user-configurable random number stride (#3067)

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      ahman24

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      paulromano

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22. Commits on Nov 22, 2024

    • Statistical weights in IndependentSource (#3195)

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23. Commits on Oct 3, 2024

    • Write surface source files per batch (#3124)

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24. Commits on Jun 18, 2024

    • Rename max_splits to max_history_splits, set default value to 1.0e7 (#2954)

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25. Commits on Apr 11, 2024

    • Add a `max_events` setting. (#2945)

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      pshriwise

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      paulromano

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      9fd096bView commit details

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26. Commits on Jan 16, 2024

    • Fix locating h5m files references in DAGMC universes (#2842)

      paulromano

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      d7d2230View commit details

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27. Commits on Nov 28, 2023

    • Call simulation_finalize if needed when finalizing OpenMC (#2790)

      pshriwise

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28. Commits on Sep 26, 2023

    • Limit number of lost particles written to disk. (#2688)

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29. Commits on Aug 19, 2023

    • time-cutoff version 2.0 (#2631)

      cfichtlscherer

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30. Commits on Jan 11, 2023

    • old changes for delayed neutron feature

      

      Christopher Fichtlscherer

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31. Commits on May 31, 2022

    • Set default max_tracks to 1000

      paulromano

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32. Commits on May 20, 2022

    • Add max_tracks setting (maximum number of tracks per process)

      paulromano

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33. Commits on Mar 29, 2022

    • Move lost particle reset from finalize() to reset(). Refs #2014

      aprilnovak

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34. Commits on Feb 3, 2022

    • Merge pull request #1958 from aprilnovak/reset-triggers

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      paulromano

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