EPR of gamma irradiated solid sucrose and UV spectra of its solution. An attempt for calibration of solid state/EPR dosimetry

A simple new approach for independent calibration of solid state/EPR (SS/EPR) dosimetry system is reported. It is based on the fact that: (i) gamma-irradiation of solid sucrose (sugar) induces stable EPR detectable free radicals accompanied by UV detectable brown colour stable in the solid state and...

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Bibliographic Details
Published in:Radiation measurements 2007-03, Vol.42 (3), p.347-351
Main Authors: Yordanov, N.D., Karakirova, Y.
Format: Article
Language:English
Subjects:
Alanine
Calibration
Earth sciences
Earth, ocean, space
Exact sciences and technology
Gamma-irradiation
Geochronology
Isotope geochemistry. Geochronology
Solid state/EPR dosimetry
Sucrose
UV spectroscopy
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Summary:A simple new approach for independent calibration of solid state/EPR (SS/EPR) dosimetry system is reported. It is based on the fact that: (i) gamma-irradiation of solid sucrose (sugar) induces stable EPR detectable free radicals accompanied by UV detectable brown colour stable in the solid state and in solution; (ii) both the EPR intensity of gamma-irradiated solid sucrose and its solution UV absorbance linearly depend on the absorbed dose high energy radiation and may be independently used for dosimetric purpose; (iii) UV spectrometers are calibrated. The correlation between EPR response and absorbed dose radiation of solid sucrose and UV absorption of its solutions is used in the present communication for calibration purpose. The procedure of sucrose extraction from sucrose-paraffin dosimeters is described. The calibration procedure may be applied to any other (alanine, self-calibrated, etc.) SS/EPR dosimeters, simultaneously irradiated with sucrose.
ISSN:1350-4487
1879-0925
DOI:10.1016/j.radmeas.2006.10.004