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Prepare for multigroup radiation (starting with jaybenne) in artemis.#135

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up_jbn_mgddmc
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Prepare for multigroup radiation (starting with jaybenne) in artemis.#135
RyanWollaeger wants to merge 3 commits into
developfrom
up_jbn_mgddmc

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@RyanWollaeger

@RyanWollaeger RyanWollaeger commented Jul 7, 2026

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Background

  • Frequency dependence will be important to capture in high-fidelity PPD simulations.

Description of Changes

  • Move gas opacity initialization inside radiation initialization.
  • Update jaybenne, singularity submodules.
  • Add scattering powerlaw to artemis opacity variants.
  • Add enum for artemis multigroup mode, frequency_type.
  • Add frequency-dependent opacity to radiation package when frequency_type == multigroup.

Checklist

  • New features are documented
  • Tests added for bug fixes and new features
  • (@lanl.gov employees) Update copyright on changed files
  • Any contribution that was created or modified with the assistance of generative AI must have a comment disclosing this such as // This file was created in part or in whole by generative AI

+ Move gas opacity initialization inside radiation initialization.
+ Update jaybenne, singularity submodules.
+ Add scattering powerlaw to artemis opacity variants.
+ Add frequency_type to radiation/imc input nodes.
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