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Selective saturation method for EPR dosimetry with tooth enamel.

Authors
  • Ignatiev, E A
  • Romanyukha, A A
  • Koshta, A A
  • Wieser, A
Type
Published Article
Journal
Applied Radiation and Isotopes
Publisher
Elsevier
Publication Date
Mar 01, 1996
Volume
47
Issue
3
Pages
333–337
Identifiers
PMID: 8935967
Source
Medline
License
Unknown

Abstract

The method of selective saturation proposed is based on the difference in the microwave (mw) power dependence of the background and radiation induced EPR components of the tooth enamel spectrum. The subtraction of the EPR spectrum recorded at low mw power from that recorded at higher mw power provides a considerable reduction of the background component in the spectrum. The resolution of the EPR spectrum could be improved 10-fold, however simultaneously the signal-to-noise ratio was found to be reduced twice. A detailed comparative study of reference samples with known absorbed doses was performed to demonstrate the advantage of the method. The application of the selective saturation method for EPR dosimetry with tooth enamel reduced the lower limit of EPR dosimetry to about 100 mGy.

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