The structure of the X-ray emission lines of the Cu Kα complex has been remeasured on a newly commissioned instrument, in a manner directly traceable to the Système Internationale definition of the meter. In this measurement, the region from 8000 eV to 8100 eV has been covered with a highly precise angular scale, and well-defined system efficiency, providing accurate wavelengths and relative intensities. This measurement updates the standard multi-Lorentzian-fit parameters from Härtwig, Hölzer, et al., and is in modest disagreement with their results for the wavelength of the Kα1 line when compared via quadratic fitting of the peak top; the intensity ratio of Kα1 to Kα2 agrees within the combined error bounds. However, the position of the fitted top of Kα1 is very sensitive to the fit parameters, so it is not believed to be a robust value to quote without further qualification. We also provide accurate intensity and wavelength information for the so-called Kα3,4 "satellite" complex. Supplementary data is provided which gives the entire shape of the spectrum in this region, allowing it to be used directly in cases where simplified, multi-Lorentzian fits to it are not sufficiently accurate.

中文翻译：

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X射线Cu Kα谱的高精度测量。


Cu Kα 络合物的 X 射线发射线结构已在新调试的仪器上重新测量，其方式可直接追溯到国际系统对仪表的定义。在此测量中，从 8000 eV 到 8100 eV 的区域覆盖了高精度的角标度和明确的系统效率，提供了准确的波长和相对强度。该测量更新了 Härtwig、Hölzer 等人的标准多洛伦兹拟合参数，并且通过峰顶的二次拟合进行比较时，与他们的 Kα1 线波长结果略有不同； Kα1 与 Kα2 的强度比在组合误差范围内一致。然而，Kα1 拟合顶部的位置对拟合参数非常敏感，因此在没有进一步限定的情况下，不认为它是一个可靠的引用值。我们还为所谓的 Kα3,4“卫星”复合体提供准确的强度和波长信息。提供的补充数据给出了该区域光谱的整个形状，允许在简化的多洛伦兹拟合不够准确的情况下直接使用它。