CAJ | 학술논문

目的探讨山羊牙釉质电子自旋共振(ESR)的剂量学的特性.方法采用机械和化学处理相结合的方法,制备5组不同年龄的山羊牙釉质样品.用137 Cs γ射线照射山羊牙釉质样品,使用ESR波谱仪测量辐射前和不同辐射剂量后不同牙釉质样品的ESR信号.结果 137Cs γ射线照射前,山羊牙釉质所固有的ESR本底信号平均值为21.5,明显低于人的平均本底强度水平39.5;与人牙釉质相同,山羊牙釉质照射后产生的剂量学信号的强度与照射剂量线性相关,5组100 mg山羊牙釉质样品,其剂量学峰的辐射灵敏度的平均值为(34.3±1.9)/Gy,与人牙釉质样品的辐射响应平均值36.3/Gy非常接近.结论人类牙釉质样品缺乏时,可以用相同辐射环境中的山羊牙釉质作为替代品进行剂量重建,为正确地评价辐射事故剂量提供科学依据.
목적 탐토산양아유질전자자선공진(ESR)적제량학적특성.방법 채용궤계화화학처리상결합적방법,제비5조불동년령적산양아유질양품.용137 Cs γ사선조사산양아유질양품,사용ESR파보의측량복사전화불동복사제량후불동아유질양품적ESR신호.결과 137Cs γ사선조사전,산양아유질소고유적ESR본저신호평균치위21.5,명현저우인적평균본저강도수평39.5;여인아유질상동,산양아유질조사후산생적제량학신호적강도여조사제량선성상관,5조100 mg산양아유질양품,기제량학봉적복사령민도적평균치위(34.3±1.9)/Gy,여인아유질양품적복사향응평균치36.3/Gy비상접근.결론 인류아유질양품결핍시,가이용상동복사배경중적산양아유질작위체대품진행제량중건,위정학지평개복사사고제량제공과학의거.
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.