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OWEN v0.3.9 - PNNL-15870 Rev. 2 materials compendium

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@caalh caalh released this 03 Jul 02:44
v0.3.9
22ab021

PNNL-15870 Rev. 2 materials compendium (411 materials)

The full PNNL Compendium of Material Composition Data for Radiation Transport Modeling (Rev. 2, April 2021, DOI 10.2172/1782721) is now a second material source alongside the curated featured set:

  • Input Builder — searchable "PNNL Compendium" section in the Materials step (search by name, formula, acronym, or element symbol). Selected materials flow through deck generation for all four codes.
  • OWEN: Insert Material — compendium entries in the QuickPick, rendered for the detected deck language.
  • Per-code generation — MCNP/Serpent isotopic ZAIDs with negative weight fractions (carbon stays elemental 6000); OpenMC add_element/add_nuclide with percent_type='wo'; SCONE atom densities with .03/temp 300. S(α,β) thermal scattering is attached only to hydrogenous moderators (light/heavy water, polyethylene) — never to fuels or metals.
  • Dataset ships as a lazy-loaded data/pnnl-materials.json (~600 KB) — never injected into the webview or the extension bundle.
  • Citation shown wherever the data appears. Dataset derived from the PyNE materials-compendium export (BSD-2-Clause), spot-verified against the official PDF tables.

Also widens two load-sensitive test timing budgets. Suite: 496 passing.

Install: download the VSIX below, then code --install-extension owen-neutronics-0.3.9.vsix (or Cursor: cursor --install-extension owen-neutronics-0.3.9.vsix).

SHA256 (VSIX): 54CFF9E7E5B23E064836974ABA62AB117A1F754ABED2AC12400356BF61049E63

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