Investigating the air kerma rate constant for 241Am through first principle calculations and simulation

The air kerma rate constant is important for estimating radiation dose and shielding calculations to ensure radiation exposure is as low as reasonably achievable (ALARA). Currently, there are significant deviations in this constant reported for 241Am by various institutions. Therefore, through first...

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Bibliographic Details
Published in:Applied radiation and isotopes 2021-02, Vol.168, p.109482-109482, Article 109482
Main Authors: Nguyen, Joanna, Gräfe, James L.
Format: Article
Language:English
Subjects:
Am-241 air kerma rate constant
Exposure rate constant
Specific gamma constant
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Summary:The air kerma rate constant is important for estimating radiation dose and shielding calculations to ensure radiation exposure is as low as reasonably achievable (ALARA). Currently, there are significant deviations in this constant reported for 241Am by various institutions. Therefore, through first principle calculations and simulation, we investigate the air kerma rate constant for 241Am based on photon energies and emission probabilities reported in literature. •Air kerma rate constants widely vary in literature, especially for 241Am.•Accuracy of radiation dose calculations rely on the air kerma rate constant, which depends on precise photon emission data.•Using a high energy threshold may omit low energy photons that contribute significantly to the air kerma rate constant.
ISSN:0969-8043
1872-9800
DOI:10.1016/j.apradiso.2020.109482