Attenue Web | Radiation Protection & Shielding Calculator

Calculation Parameters

Source Geometry

Detector Position

Energy Spectrum

μ Calculation Method (Attenuation Coefficient)

Nuclide Inventory

Decay Time (Optional)

Time Unit

Mono-energetic Spectrum

Source Material (Self-absorption)

Source Dimensions

Source length (cm)

Disk radius (cm)

Radius (cm)

Height (cm)

Sphere radius (cm)

Thickness (cm)

Width (cm)

Height (cm)

Detector-Source Distance (Face)

Unit

Dose Rate Unit

Shielding Screens

Reference Material for Buildup (Build-up Factor)

The buildup models scattered photons. Select the heaviest or dominant shielding.

Dose Rate H*(10)

µSv/h

Ref: ICRP 74

Total Photon Flux

γ / (cm² · s)

Accumulation Factor (B)

G-P (ANS-6.4.3)

Inventory after Decay & Daughter Nuclides

Nuclide	Status	Half-life (T½)	Initial Activity	Final Activity	Proportion (%)

Contributions of emission gamma lines

Nuclide	Energy (MeV)	Effective yield (γ/dec)	Dose rate (µSv/h)	Contribution (%)

Physical Cross-Section Schematic

Source

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Detector

Y-Axis:

Analyse de l'atténuation du rayonnement

Composant	Atténuation (%)	Facteur d'atténuation individuel

Numerical values of energy response (eD)

Energy (MeV)	eD Response (pSv / incident photon)