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Updated: May 23, 2026

Dosimetry for Cell Irradiation using Orthovoltage (40-300 kV) X-Ray Facilities
Published on: February 20, 2021
Novel reference radiation fields for pulsed photon radiation installed at PTB.
1Physikalisch-Technische Bundesanstalt, Bundesallee 100, 38116 Braunschweig, Germany. jana.klammer@ptb.de
New pulsed X-ray reference fields are now available for testing electronic dosemeters used by ~70% of occupationally exposed persons in Germany. This addresses critical deficits in active dosemeters operating in pulsed radiation fields.
Area of Science:
- Medical physics
- Radiation protection
- Metrology
Background:
- ~70% of occupationally exposed individuals in Germany work in pulsed radiation fields, primarily in medicine.
- Active electronic dosemeters show significant performance issues or failure in pulsed radiation fields.
- Current dosemeter type testing standards only cover continuous radiation.
Purpose of the Study:
- To establish a reliable reference field for pulsed photon radiation.
- To meet upcoming type test requirements for dosemeters in pulsed radiation environments.
- To support research and development of accurate dosimetry in medical applications.
Main Methods:
- Development of a novel X-ray reference field for pulsed photon radiation.
- Collaboration between the Physikalisch-Technische Bundesanstalt and a manufacturer.
- Comprehensive characterization of the developed reference field.
Main Results:
- A well-characterized X-ray reference field for pulsed photon radiation has been established.
- The new reference field is tailored to main applications within the medical sector.
- The field is available for research and type testing of dosemeters.
Conclusions:
- The developed pulsed X-ray reference field addresses a critical need in radiation dosimetry.
- It enables accurate type testing and research for dosemeters in pulsed fields.
- This advancement is crucial for ensuring radiation safety in medical applications.
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