Jiangsu Institute of Metrology, Nanjing, 210023, China; College of Automation Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing, 211106, China; Institute of Nuclear Analytical Technology, Nanjing University of Aeronautics and Astronautics, Nanjing, 211106, China.
Jiangsu Institute of Metrology, Nanjing, 210023, China.
Appl Radiat Isot. 2023 Apr;194:110687. doi: 10.1016/j.apradiso.2023.110687. Epub 2023 Jan 23.
An inelastic neutron scattering facility consisting of a DT neutron generator and a HPGe detector was used for metallic material analysis. The facility model was optimized based on Monte Carlo simulations. Performance of modified facility was tested through various metallic elements measurements. The results showed that the mass detection limits (MDL) of different elements were improved after optimization. Quantitative analyses of Fe and Cr in stainless steel sample were then conducted to evaluate the performance of alloy measurement. Calibration curves were obtained through measuring the reference samples. The contents of Fe and Cr in an unknown sample were determined by the calibration curves and the results were in good agreement with those obtained by X-ray fluorescence method.
采用由 DT 中子发生器和 HPGe 探测器组成的非弹性中子散射装置进行金属材料分析。根据蒙特卡罗模拟对装置模型进行了优化。通过对各种金属元素的测量来测试改进后的装置性能。结果表明，优化后不同元素的质量检测限（MDL）得到了提高。然后对不锈钢样品中的 Fe 和 Cr 进行定量分析，以评估合金测量的性能。通过测量参考样品获得校准曲线。通过校准曲线确定未知样品中 Fe 和 Cr 的含量，结果与 X 射线荧光法的结果吻合良好。
