<sup>137</sup>Cs稳谱源的研制

¹³⁷Cs稳谱源的研制

摘要: 通过对¹³⁷Cs γ射线穿过陶瓷体源芯、不锈钢源壳和钨钢壳后衰减规律的研究，参考用户提供的¹³⁷Cs稳谱源的表面γ剂量率，确定¹³⁷Cs稳谱源的活度。对陶瓷体源芯吸附性能进行研究，以提高¹³⁷Cs稳谱源γ射线输出率的一致性，最终确定¹³⁷Cs稳谱源的制备工艺。经使用证明，该源的γ射线输出率准确、产品一致性好，已应用于岩性密度测井仪测井，可实现¹³⁷Cs稳谱源的国产化。

Abstract: The attenuation laws of the Cesium -137 γ-ray penetrating the ceramic core、stainless steel and tungsten steel were studied. The radioactivity of the ¹³⁷Cs stabilizer source was determined through the surface dose rate of ¹³⁷Cs stabilizer sources. In addition, the adsorption properties of the ceramic core were studied to improve the stability of the output rate, and established a production line. The application results showed that the output rate of ray source was accurate and was of a good consistency. At present, the source had been used in logging lithology, and achieved the realization of domestic product.