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为了解决目前元素俘获能谱测井解释中,根据原始测量谱难以准确获得各个元素产额的困难,本文建立了一套先进的测量元素俘获伽马能谱实验方法,首次获得了硅、钙和铁等10种元素的标准俘获伽马能谱;并利用蒙托卡罗方法在同样条件下模拟得到了上述10种元素的标准模拟俘获伽马能谱。将这两种方式获得的元素标准俘获伽马能谱与国际原子能机构核数据中心数据进行对比分析,从中确定了可用于实际元素俘获能谱测井解谱计算的硅、钙和铁等10种元素的俘获伽马能谱。这一结果有效解决了元素俘获能谱测井资料处理过程中由原始测量谱到各元素产额转换过程中的关键技术难点,可有效提高元素产额的计算精度。
In order to solve the difficulty of obtaining the yield of each element accurately according to the original measurement spectrum in order to solve the current energy-source-logging interpretation of elemental capture spectra, an advanced set of experimental methods for capturing gamma-ray spectra of measurement elements was established in this paper. Iron and other 10 kinds of standard capture gamma spectroscopy; and the use of Monte Carlo method in the same conditions simulated the standard simulated capture gamma spectroscopy of the above 10 elements. Comparing the elemental standard capture gamma spectra obtained from the two methods with the IAEA nuclear data center data, 10 species of silicon, calcium and iron, which can be used in the actual elemental capture energy spectrum log interpretation Element capture gamma spectroscopy. This result effectively solves the key technical difficulties in the conversion from original measurement spectrum to output of various elements in the process of energy spectrum logging data processing by elemental capture spectroscopy, which can effectively improve the calculation precision of elemental yield.