1. Radiochromic film containing methyl viologen for radiation dosimetry
- Author
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M. Lavalle, Ágnes Sáfrány, András Kovács, S. Caminati, U. Corda, M. Baranyai, Arne Miller, Margherita Venturi, P.G. Fuochi, M. Lavalle, U. Corda, P.G. Fuochi, S. Caminati, M. Venturi, A. Kovác, M. Baranyai, A. Sáfrány, and A. Miller
- Subjects
Vinyl alcohol ,Dosimeter film ,Radiation ,Materials science ,Dosimeter ,Environmental condition effects ,integumentary system ,Radiochemistry ,Gamma rays ,Gamma ray ,Electron beams ,Ionizing radiation ,Absorbance ,chemistry.chemical_compound ,chemistry ,Absorbed dose ,Dosimetry ,Irradiation ,Nuclear chemistry - Abstract
Poly(vinyl alcohol) (PVA) films containing methyl viologen (MV2+) that colours blue upon exposure to ionizing radiation were investigated as possible dosimeters for use in radiation processing applications. In order to find the most suitable composition of the PVA-MV2+ film, different concentrations of the dye have been studied. The absorbance values at selected wavelengths, obtained from irradiation of the PVA film containing the most suitable MV2+ concentration, can be satisfactorily related to the absorbed dose over a wide range, from 50 Gy up to 40 kGy. The effects of dose, dose rate, humidity and temperature on the response of the PVA-MV2+ dosimeter film have been studied under laboratory conditions. We conclude that the PVA film containing MV2+ is a promising tool for the absorbed dose measurements in several industrial applications of ionizing radiations.
- Published
- 2007
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