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

S L Chun; P K N Yu

doi:10.1063/1.4898162

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

Rev Sci Instrum. 2014 Oct;85(10):106103. doi: 10.1063/1.4898162.

Authors

S L Chun¹, P K N Yu¹

Affiliation

¹ Department of Physics and Materials Science, City University of Hong Kong, Kowloon Tong, Hong Kong.

PMID: 25362462
DOI: 10.1063/1.4898162

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%.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Calibration
Equipment Design
Film Dosimetry / instrumentation
Film Dosimetry / methods*
Time Factors
Ultraviolet Rays*