Spectroscopy Help
Screening and training scope
The gamma spectroscopy workspace supports screening estimates and training workflows only. It does not replace calibrated spectroscopy software, detector QA, laboratory procedures, or certified counting-lab analysis.
What each tool does
- Energy calibration: simple linear fit (energy = slope × channel + intercept) from user-entered channel–energy pairs; optional prediction for an unknown channel.
- Efficiency calibration: efficiency from net peak counts, declared activity, emission probability, live time, and optional decay correction factor.
- ROI activity: activity from gross minus background ROI counts, user efficiency, emission probability, and live time.
- FWHM / resolution: resolution percent from FWHM and peak energy (FWHM / energy × 100).
- MDA screening: simplified Currie-style screening (critical level and detection limit in counts, then approximate MDA in activity); optional per-unit when sample mass/volume is supplied.
Source and calibration notes
Calculations always run from your inputs. For report export, HPCalc may require a short calibration or method note on tools that depend on documented context (for example geometry/source for efficiency, calibration basis for ROI activity, method note for MDA, and calibration source for energy calibration).
When a note is missing, the UI shows report export as blocked; fix documentation before exporting JSON or Markdown.
Tab hash routes
Open the spectroscopy calculator with a hash to land on a specific tool:
#energy-calibration#efficiency-calibration#roi-activity#fwhm-resolution#mda-screening
Invalid or empty hashes fall back to energy calibration.
What spectroscopy tools do not do
- No peak fitting or deconvolution.
- No spectrum file parsing or vendor format import.
- No automated nuclide identification.
- No certified laboratory analysis or QA sign-off.
- No replacement for facility spectroscopy software or detector-specific calibration packages.
Professional judgment required