title: Note: Calibration of EBT3 radiochromic film for measuring solar ultraviolet radiation.
abstract: Solar (UVA + UVB) exposure was assessed using the Gafchromic EBT3 film. The coloration change was represented by the net reflective optical density (Net ROD). Through calibrations against a UV-tube lamp, operational relationships were obtained between Net ROD and the (UVA + UVB) exposures (in J cm(-2) or J m(-2)). The useful range was from ∼0.2 to ∼30 J cm(-2). The uniformity of UV irradiation was crucial for an accurate calibration. For solar exposures ranging from 2 to 11 J cm(-2), the predicted Net ROD agreed with the recorded values within 9%, while the predicted exposures agreed with the recorded values within 15%.
authors.affiliation: Department of Physics and Materials Science, City University of Hong Kong, Kowloon Tong, Hong Kong.
authors.forename: S L
authors.initials: SL
authors.lastname: Chun
authors.affiliation: Department of Physics and Materials Science, City University of Hong Kong, Kowloon Tong, Hong Kong.
authors.forename: P K N
authors.initials: PK
authors.lastname: Yu
mesh_terms: D002138:Calibration; D004867:Equipment Design; D005373:Film Dosimetry / Q000295:instrumentation / Q000379:methods*; D013997:Time Factors; D014466:Ultraviolet Rays