The decay constant for irradiated human hair using EPR spectroscopy.
This paper reports the results of a study of gamma-irradiated human hair using CW-EPR. The radiation centre in hair was determined, for the first time, to be characterized by a single decay constant with k = 4.86(9) microseconds-1 for brown and yellow hair and k = 1.45(10) microseconds-1 for red hair for initial doses between 50 and 634 Gy. It is suggested that human hair has the potential to be used as a dosimeter for accidental exposure to ionizing radiation if measurements are commenced within approximately 24 h.
Department of Physics and Astronomy, University of Calgary, AB, Canada.
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Buckmaster
D004578:Electron Spin Resonance Spectroscopy / Q000379:methods; D005720:Gamma Rays; D006197:Hair / Q000737:chemistry* / Q000528:radiation effects*; D006801:Humans; D011880:Radiotherapy Planning, Computer-Assisted