Note : Calibration of EBT3 radiochromic film for measuring solar ultraviolet radiation

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Original languageEnglish
Article number106103
Journal / PublicationReview of Scientific Instruments
Volume85
Issue number10
Online published16 Oct 2014
Publication statusPublished - Oct 2014

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%.