Proposal for new values of ISO 4037 mono-energetic photon conversion coefficients

This is a dataset for a manuscript "Re-calculation of air kerma to dose equivalent conversion coefficients for mono-energetic photons".

This dataset presents the proposal for new values of ISO 4037 standard conversion coefficients (CCs) from total air kerma to dose equivalent quantities H'(0.07), H'(3), H*(10), Hp(0.07), Hp(3), and Hp(10) for area and personal dosimetry for mono-energetic photons in the energy range from 2 keV to 50 MeV, assuming secondary charged particle equilibrium. Calculations using the MCNP Monte Carlo code were performed for a large number of photon energies with the aim to prevent errors resulting from possible improper interpolation between currently available sparsely spaced CC values, when an average CC value over a photon fluence spectrum needs to be determined. It was also aimed to determine the CC values for all dose equivalent quantities in the same and consistent way.

The effort leading to the presented results was driven by discrepancies in ISO 4037-3 data found during the work on a joint European metrological research project entitled “Harmonisation, update and implementation of standards related to radiation protection dosemeters for photon radiation“ (22NRM07 GuideRadPROS). The 3-year project started in 2023 is led by the Finnish radiation and nuclear safety authority (STUK) and aims to provide guidance and protocols to metrology institutes, standardization bodies, and regulators for a consistent and harmonized approach to radiation protection measurements and calibrations following the ISO 4037 standard series.

The project 22NRM07 GuideRadPROS has received funding from the European Partnership on Metrology, co-financed from the European Union’s Horizon Europe Research and Innovation Programme and by the Participating States. Funded by the European Union. Views and opinions expressed are, however, those of the author(s) only and do not necessarily reflect those of the European Union or EURAMET. Neither the European Union nor the granting authority can be held responsible for them.

Funder name: European Partnership on Metrology

Funder ID: 10.13039/100019599

Grant number: 22NRM07 GuideRadPROS