Accurate estimation of environmental dose rate is essential for high-resolution trapped-charge dating. Beta and gamma emissions from simulated sediments containing radioactive uranium, thorium and potassium are modelled in contexts that are spatially heterogeneous. Dose rate was modelled using Monte Carlo radiation transport codes MCNP and PENELOPE. A number of key issues that affect dose rate evaluation are examined and updated corrections are calculated.
Granular structures used fo...Expand abstract
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- Oxford University, UK
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- Roger P. Nathan
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Numerical modelling of environmental dose rate and its application to trapped-charge dating
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