Abstract
Establishment and control of metrological characteristics of measurements of absorbed ionizing radiation doses in the range of 0.01 and 200 kGy by reference materials is an urgent task due to their wide application in various industries. The most convenient means of metrological support for transferring a unit of absorbed dose rate of intense photon, electron, and beta radiation to measuring instruments in radiation technologies are reference materials with established metrological traceability to the International System of Units (SI). In the present study, a method for expanding the dynamic range of measuring the absorbed dose of high-intensity ionizing radiation by radiochromic film dosimetry systems was considered and tested. The accuracy (uncertainty) of dose measurements was estimated depending on the initial optical density of the radiation-sensitive layer of the radiochromic composition. The possibility of expanding the dose characteristics and improving the metrological characteristics of the existing reference materials of absorbed dose (in water) for use as secondary standards (Measures) of the absorbed dose of ionizing radiation reproducing and (or) storing one or more points of the selected measurement scale of the absorbed dose with increased accuracy (uncertainty) of the measured values of the absorbed dose (in water) in an extended dynamic range was shown.
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Notes
- 1.
GET 209-2014 State Primary Special Standard of the Unit of Absorbed Dose Rate of Intense Photon, Electronic and Beta Radiation for Radiation Technologies: Custodian Institute All-Russian Scientific Research Institute of Physical Technical and Radio Technical Measurements Available via FIF EUM. https://fgis.gost.ru/fundmetrology/registry/12/items/397897. Accessed 4 August 2022 (In Russ.).
- 2.
Federal Information Fund for Ensuring the Uniformity of Measurements. Available via. https://fgis.gost.ru/fundmetrology. Accessed 4 August 2022 (In Russ.).
Abbreviations
- IOD:
-
Induced optical density
- OD:
-
Optical density
- AD:
-
Absorbed dose
- RDF:
-
Radiochromic dye film
- RSC:
-
Radiation-sensitive composition
- RSL:
-
Radiation-sensitive layer
- SD:
-
Standard deviation
- RM:
-
Reference material
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Acknowledgements
The author expresses his gratitude to the team of the Laboratory of Technological Dosimetry of the All-Russian Scientific Research Institute of Physical-Technical and Radio-Technical Measurements (VNIIFTRI) for their help and support in conducting this research. All measurements were performed using the equipment of the All-Russian Scientific Research Institute of Physical-Technical and Radio-Technical Measurements.
Conflict of Interest
The article was prepared on the basis of a report presented at the V International Scientific Conference “Reference Materials in Measurement and Technology” (Yekaterinburg, September 13–16, 2022). The article was admitted for publication after the abstract was revised, the article was formalized and the review procedure was carried out.
The version in the Russian language is published in the journal “Measurement Standards. Reference Materials” 2023;19(4):63–71. [in Russian]. https://doi.org/10.20915/2077-1177-2023-19-4-63-71.
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Tenishev, V.P. (2024). Reference Materials of Absorbed Dose: Expanding Dynamic Range and Improving Measurement Accuracy. In: Sobina, E.P., et al. Reference Materials in Measurement and Technology . RMMT 2022. Springer, Cham. https://doi.org/10.1007/978-3-031-49200-6_25
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DOI: https://doi.org/10.1007/978-3-031-49200-6_25
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