Study of the absorption spectra of Fricke Xylenol Orange gel dosimeters

Conference · Wed Jul 01 04:00:00 EDT 2015

DOI:https://doi.org/10.1109/ANIMMA.2015.7465579· OSTI ID:22531276

Gambarini, Grazia; Artuso, Emanuele ^[1]; Liosi, Giulia Maria; Giacobbo, Francesca; Mariani, Mari ^[2]; Brambilla, Luigi; Castiglioni, Chiara ^[3]; Carrara, Mauro; Pignoli, Emanuele ^[4]

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1. Universita degli Studi di Milano and National Institute of Nuclear Physics (INFN), Milan, (Italy)
2. Department of Energy, Nuclear Engineering Division-CeSNEF, Politecnico di Milano, Milan, (Italy)
3. Department of Chemistry, Materials, Chemical Enginnering 'G. Natta', Politecnico di Milano, Milan, (Italy)
4. Medical Physics Unit, Fondazione IRCCS Istituto Nazionale Tumori, Milan, (Italy)

A systematic study of the absorption spectra of Fricke Xylenol Orange gel dosimeters has been performed, in the wavelength range from 300 nm to 700 nm. The spectrum of Xylenol Orange (without ferrous sulphate solution) has been achieved, in order to subtract its contribution from the absorption spectra of the irradiated Fricke Xylenol Orange gel dosimeters. The absorbance due to ferric ions chelated by Xylenol Orange has been studied for various irradiation doses. Two absorbance peaks are visible, mainly at low doses: the first peak increases with the dose more slowly than the second one. This effect can explain the apparent threshold dose that was frequently evidenced. (authors)

• Research Organization: Institute of Electrical and Electronics Engineers - IEEE, 3 Park Avenue, 17th Floor, New York, N.Y. 10016-5997 (United States)
• OSTI ID: 22531276
• Report Number(s): ANIMMA--2015-IO-224
• Country of Publication: United States
• Language: English

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
61 RADIATION PROTECTION AND DOSIMETRY
ABSORPTION SPECTRA
CHELATES
DOSEMETERS
GELS
IRRADIATION
SULFATES
THRESHOLD DOSE
WAVELENGTHS
XYLENOL ORANGE