Abstract
방사선 조사된 남양진주는 광투과 검사, 확대 검사, 형광반응 검사 등의 보석학적 검사방법으로는 감별이 어렵지만, ESR 분석을 통해 조사된 남양진주와 조사되지 않은 남양진주의 감별이 가능하였다. 본 연구에서는 조사선량이 증가함에 따른 <TEX>$CO^-_2$</TEX> radical의 변화와 관련된 정보를 제공할 목적으로 진주층과 핵을 분리하여 분석하였으며, 핵보다는 진주층에서 <TEX>$CO^-_2$</TEX> radical이 더 명료하게 나타남을 발견하였다. It is very difficult to detect irradiated South Sea cultured pearls (SSCPs) at a low dose by gemological methods (e.g. optical transmission method, microscopic examination, UV fluorescence reaction, and so on). In this study, however, it was possible to distinguish between irradiated SSCPs from un-irradiated SSCPs by ESR analysis. We have analyzed the pearl nacre and nucleus by separating them for the purposed of providing information about the change of <TEX>$CO^-_2$</TEX> radical as growing absorbed doses. And it was found out that the signal of <TEX>$CO^-_2$</TEX> radical of the nacre is more distinct than the nucleus.
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