| 摘要 |
PURPOSE:To detect pits caused by radiation readily and accurately through a microscope by forming a molded body with dyethyleneglycol bisallyl carbonate and fatty acid dialkylester dibasic and the like. CONSTITUTION:The mixture of diethyleneglycol bisallyl carbonate, fatty acid dialkyl ester dibasic whose carbon number of alkyl group is 4 - 20, alkyl ester acrylate whose carbon number of alkyl group is 1 - 3 and alkyl ester methacrylate is polymerized and hardened, and a molded body is obtained. The molded body can impart the coarse surface having the following roughness: the roughness is higher than the limit at which the surface can be recognized by microscope observation in alkaly etching for forming etching pits; and the roughness lower than the limit at which the molded body can be distinguished from the etching pits. In this way, the etching pits caused by radiation can be detected readily and accurately by the microscope observation.
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