Properties of goat tooth enamel electron spin resonance dosimetry

VernacularTitle:山羊牙釉质电子自旋共振的剂量学特性
Author: Ling JIAO ; Jingxing SUN ; Yanqiu DING ; Wenyi ZHANG
Publication Type:Journal Article
Keywords: γ-rays; Goat; Tooth enamel; Electron spin resonance; Dosimetry
From: Chinese Journal of Radiological Medicine and Protection 2011;31(2):233-235
CountryChina
Language:Chinese
Abstract: Objectlve To study the properties of goat tooth enamel electron spin resonance (ESR)dosimetry.Methods Tootll enamel samples of goats were achieved by combined mechanical and chemical treatment at the ages of l,2,3,5,and 6 years.respectively and 9 enamel samples of adult molar were obtained.These enamel samples were exposed to 137Cs γ-rays at the cumulative doses of 0,0.5,1.0,2.0,and 5.0 Gy,respectively.ESR spectra Was measured before and after exposure.Results The background signal of goat tooth samples W88 21.5,significantly lower than that of the adult molar samples(39.5).The dusimetric signal intensity of the goat enamel increased with the radiation dose in a linear manner just as that of the human molars.The average radiation sensitivity of the goat tooth samples was(34.3±1.9)/Gy,close to that of the human tooth samples.Conclusions Goat teeth can be used for retrospective radiation dose reconstruction when human teeth are unavailable,in order to previde scientific data for dose reconstruction accurately.