Note on the rule-of-thumb equation for the external dose rate from a point gamma source

The value of the constant in the rule-of-thumb equation for estimating external dose rates from gamma and x-ray radiations emitted by a point radionuclide source is re-evaluated, suggesting a value of 7 is the best choice where the photon energy spectrum mostly falls mostly between 0.05 and 2.0 MeV.

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Publication Details

Journal
Journal of Radiological Protection
Published
2025-05-14
DOI
https://doi.org/10.1088/1361-6498/add89e
Primary Topic
Radiation Detection and Scintillator Technologies
Type
article
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article

Note on the rule-of-thumb equation for the external dose rate from a point gamma source

Ralph Whitcher
Journal of Radiological Protection
Radiation Detection and Scintillator Technologies
article

Note on the rule-of-thumb equation for the external dose rate from a point gamma source

Ralph Whitcher
article en

Abstract

The value of the constant in the rule-of-thumb equation for estimating external dose rates from gamma and x-ray radiations emitted by a point radionuclide source is re-evaluated, suggesting a value of 7 is the best choice where the photon energy spectrum mostly falls mostly between 0.05 and 2.0 MeV.

Journal of Radiological ProtectionVol. 45(2)
East Sussex County Council (GB), HM Prison Service (GB)
Affordable and clean energy
Openalex Percentile: Top 88%
Radiation Detection and Scintillator Technologies
DOISourceOpenAlex
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Note on the rule-of-thumb equation for the external dose rate from a point gamma source — Ralph Whitcher · Journal of Radiological Protection (2025) | TGRS Research Map | TGRS