UNLAMINATED GAFCHROMIC EBT3 FILM FOR ULTRAVIOLET RADIATION MONITORING.
Measurement of ultraviolet (UV) radiation is important for human health, especially with the expanded usage of short wavelength UV for sterilization purposes. This work examines unlaminated Gafchromic EBT3 film for UV radiation monitoring. The authors exposed the film to select wavelengths in the UV spectrum, ranging from 207 to 328 nm, and measured the change in optical density. The response of the film is wavelength dependent, and of the wavelengths tested, the film was most sensitive to 254 nm light, with measurable values as low as 10 µJ/cm2. The film shows a dose-dependent response that extends over more than four orders of magnitude. The response of the film to short wavelength UV is comparable to the daily safe exposure limits for humans, thus making it valuable as a tool for passive UV radiation monitoring.
Center for Radiological Research, Columbia University Medical Center, New York, NY, USA.
David
D
Welch
Center for Radiological Research, Columbia University Medical Center, New York, NY, USA.
Gerhard
G
Randers-Pehrson
Department of Surgery, Columbia University Medical Center, New York, NY, USA.
Henry M
HM
Spotnitz
Center for Radiological Research, Columbia University Medical Center, New York, NY, USA.
David J
DJ
Brenner
D002138:Calibration; D005373:Film Dosimetry / Q000379:methods*; D006801:Humans; D013057:Spectrum Analysis / Q000379:methods; D014466:Ultraviolet Rays