Observed arrival · 2026-10-03
RadMetric’s photon shielding calculator
An online calculator for estimating photon transmission, shielding thickness, and air kerma across custom materials and photon energies.
- For
- Radiation shielding estimators and technical users
- Worth noticing
- The self-service model is explicitly narrow-beam (B = 1) and excludes scattered-photon buildup.
Field notes
The described workflow accepts material composition, density, thickness, and photon energies, then uses NIST XCOM attenuation coefficients for transmission estimates. It also covers narrow-beam HVL/TVL calculations and point-source air kerma using entered geometry. The page identifies important limits: self-service results exclude scattered-photon buildup and do not model full isotropic transport or H*(10); more complex geometry and Monte Carlo analyses are available by consultation.
Observed signals
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