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EDS of the first NAB (C63000) powder: DTSA-II quant, Monte Carlo, acquisition advice - #28

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@claude claude Bot commented Oct 28, 2026

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Analysis requested in #27: DTSA-II and EDS analysis of the first NAB (C63000) powder (SEM/EDS of Oct 27, 2026). Data: sgbaird/agent-staging@3c25afa, all 20 files sha256-verified; raw files are not committed (fetch_data.sh fetches them).

Everything is in analysis/2026-10-28-nab-c63000-eds/ (see its README):

  • Peak ID: energy-scale correction per spectrum, pile-up (L+L at 1.82 keV, Cu Kα+Cu Kα at 16.1 keV), W/Mn/Si/Zn/escape checks
  • DTSA-II quantification (Polaris 2026-09-10, run headless with --script under Xvfb): simulated pure-element standards, filter fit, XPP, at 10/15/20 kV, with uncertainties
  • DTSA-II Monte Carlo (NISTMonte Gen 3) of nominal C63000: flat bulk, 50/100 µm spheres on carbon, and a raster over a 50 µm sphere; the MC spectra are quantified the same way
  • Cross-check: HyperSpy/exspy fits with the MC spectrum as a matrix-matched standard
  • Acquisition advice in CALIBER's parameters, plus a protocol for the next powder lots

At 20 kV (K lines, normalized): Al 9.2 ± 2.4, Fe 3.42 ± 0.11, Ni 5.33 ± 0.17, Mn 0.14 ± 0.03, Cu 81.9 ± 2.2 wt%. All are inside the C63000 limits. No W was detected.

🤖 Generated with Claude Code

github-actions Bot and others added 4 commits October 28, 2026 04:41
…script (WIP)

Co-authored-by: Sterling G. Baird <45469701+sgbaird@users.noreply.github.com>
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
…uant at 10/15/20 kV

Co-authored-by: Sterling G. Baird <45469701+sgbaird@users.noreply.github.com>
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
…ra quantified, exspy cross-check, comparison figures

Co-authored-by: Sterling G. Baird <45469701+sgbaird@users.noreply.github.com>
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
…e; figure layout

Co-authored-by: Sterling G. Baird <45469701+sgbaird@users.noreply.github.com>
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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