Fluoropolymer coated alanine films treated by atmospheric pressure plasmas − In comparison with gamma irradiation

Fluoropolymer coated alanine films treated by atmospheric pressure plasmas − In comparison with... INTRODUCTIONElectron paramagnetic resonance (EPR, also called electron spin resonance [ESR]) spectroscopy is a method to study the presence and properties of unpaired electrons in atoms or molecules. In other words, EPR can detect radicals and electronic defects in a material. Alanine‐EPR dosimetry for various kinds of ionizing radiation is well‐documented and standardized. Alanine is found to be a convenient material for establishing a quantitative link between an absorbed dose of radiation and DNA modification − or microbiological decontamination − caused by ionizing radiation, since the amination of an alanine molecule produces a stable alkyl free radical, CH3CHCOO−. For the application in radiation dosimetry, tablets or films of alanine‐comprising compounds are used as calibrated witness dosimeters. Figure shows examples of commercial alanine films laminated on paper strips used for Alanine‐EPR dosimetry. They are typically coated with a fluoropolymer resin.Alanine dosimeter films comprising composites laminated on the left (non‐engraved‐) side of the paper stripsCalibrated gamma‐cells with an established traceability to the international radiation dose standard are used for calibration of the alanine dosimeters. Specifically, the calibration procedure includes irradiation of alanine dosimeters in the gamma‐cell by predetermined systematically increasing doses of gamma‐radiation in a certain range of absorbed dose values. Here, http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Plasma Processes and Polymers Wiley

Fluoropolymer coated alanine films treated by atmospheric pressure plasmas − In comparison with gamma irradiation

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Publisher
Wiley
Copyright
© 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
ISSN
1612-8850
eISSN
1612-8869
D.O.I.
10.1002/ppap.201700131
Publisher site
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Abstract

INTRODUCTIONElectron paramagnetic resonance (EPR, also called electron spin resonance [ESR]) spectroscopy is a method to study the presence and properties of unpaired electrons in atoms or molecules. In other words, EPR can detect radicals and electronic defects in a material. Alanine‐EPR dosimetry for various kinds of ionizing radiation is well‐documented and standardized. Alanine is found to be a convenient material for establishing a quantitative link between an absorbed dose of radiation and DNA modification − or microbiological decontamination − caused by ionizing radiation, since the amination of an alanine molecule produces a stable alkyl free radical, CH3CHCOO−. For the application in radiation dosimetry, tablets or films of alanine‐comprising compounds are used as calibrated witness dosimeters. Figure shows examples of commercial alanine films laminated on paper strips used for Alanine‐EPR dosimetry. They are typically coated with a fluoropolymer resin.Alanine dosimeter films comprising composites laminated on the left (non‐engraved‐) side of the paper stripsCalibrated gamma‐cells with an established traceability to the international radiation dose standard are used for calibration of the alanine dosimeters. Specifically, the calibration procedure includes irradiation of alanine dosimeters in the gamma‐cell by predetermined systematically increasing doses of gamma‐radiation in a certain range of absorbed dose values. Here,

Journal

Plasma Processes and PolymersWiley

Published: Jan 1, 2018

Keywords: ; ; ; ;

References

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