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Updated: Mar 5, 2026

Dosimetry for Cell Irradiation using Orthovoltage 40-300 kV X-Ray Facilities

Dosimetry for Cell Irradiation using Orthovoltage 40-300 kV X-Ray Facilities

Published on: February 20, 2021

UNLAMINATED GAFCHROMIC EBT3 FILM FOR ULTRAVIOLET RADIATION MONITORING.

David Welch¹, Gerhard Randers-Pehrson¹, Henry M Spotnitz²

¹Center for Radiological Research, Columbia University Medical Center, New York, NY, USA.

Radiation Protection Dosimetry

|March 25, 2017

Summary

This summary is machine-generated.

Unlaminated Gafchromic EBT3 film effectively monitors ultraviolet (UV) radiation. This passive UV radiation monitoring tool shows a dose-dependent response, proving sensitive to short UV wavelengths relevant to human safety limits.

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Last Updated: Mar 5, 2026

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Area of Science:

Medical Physics
Radiation Dosimetry
Optical Sensing

Background:

Accurate measurement of ultraviolet (UV) radiation is crucial for human health.
The increasing use of short-wavelength UV for sterilization necessitates reliable monitoring methods.

Purpose of the Study:

To evaluate the suitability of unlaminated Gafchromic EBT3 film for UV radiation monitoring.
To determine the film's response characteristics across various UV wavelengths.

Main Methods:

Exposing unlaminated Gafchromic EBT3 film to UV wavelengths from 207 to 328 nm.
Measuring the change in optical density of the film post-exposure.
Analyzing the wavelength dependency and dose-response of the film.

Main Results:

The film's response to UV radiation is wavelength-dependent.
Gafchromic EBT3 film demonstrated highest sensitivity to 254 nm UV light, detecting doses as low as 10 µJ/cm².
A dose-dependent response was observed over four orders of magnitude.

Conclusions:

Unlaminated Gafchromic EBT3 film is a viable tool for passive UV radiation monitoring.
The film's sensitivity to short-wavelength UV aligns with human safety exposure limits.
This film offers a practical solution for monitoring UV radiation in various applications.