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Jacquin Antoine 091d7d9eb8 Fix: mask channels below 30 keV in inference and training to prevent misidentification
Below ~30 keV the detector signal is dominated by X-ray fluorescence (L-shell)
and artifacts not modelled in training data. This spurious low-energy continuum
caused the model to misidentify Am-241 as Th-232/U-235. Masking channels <30 keV
before inference fixes Am-241 detection from 2% to 99%. Same masking applied in
the synthetic spectrum generator for consistent retraining.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
2026-05-21 21:55:34 +02:00
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