Sunna 535-nm photo-fluorescent film dosimeter response to different environmental conditions

M. K. Murphy, A. Kovács, W. L. McLaughlin, S. D. Miller, J. M. Puhl

Research output: Contribution to journalArticle

4 Citations (Scopus)


Evaluations on the influence of environmental variabilities on the red fluorescence component of the Sunna Model γ photo-fluorescent dosimeter™ have previously been reported. This present paper describes the environmental effects on the response of the green fluorescence component of the same dosimeter, which is manufactured using the injection molding technique. The results presented include temperature, relative humidity, and light influences both during and after irradiation. The green fluorescence signal shows a significant dependence on irradiation temperature below room temperature at 1%/°C. Above room temperature (approximately 24-60°C), the irradiation temperature effect varies from -0.1%/°C to 1.0%/°C, depending on the absorbed dose level. For facilities with irradiation temperatures between 30°C and 60°C and absorbed dose levels above 10kGy, irradiation temperature effects are minimal. Light-effects results indicate that the dosimeter is influenced by ultraviolet and blue wavelengths during irradiation as well as during the post-irradiation stabilization period (approximately 22h), requiring the use of light-tight packaging. Results also show that the dosimeter exhibits negligible effects from ambient moisture during and after irradiation when in the range of 33-95% relative humidity.

Original languageEnglish
Pages (from-to)995-1003
Number of pages9
JournalRadiation Physics and Chemistry
Issue number6
Publication statusPublished - Dec 2003


  • Dosimetry
  • Film dosimeters
  • Food irradiation
  • Radiation processing
  • Sterilization

ASJC Scopus subject areas

  • Radiation

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