This paper presents an absolute X‐ray photon energy measurement method that uses a Bond diffractometer. The proposed system enables the prompt and rapid in situ measurement of photon energies over a wide energy range. The diffractometer uses a reference silicon single‐crystal plate and a highly accurate angle encoder called SelfA. The performance of the system is evaluated by repeatedly measuring the energy of the first excited state of the potassium‐40 nuclide. The excitation energy is determined as 29829.39 (6) eV, and this is one order of magnitude more accurate than the previous measurement. The estimated uncertainty of the photon energy measurement was 0.7 p.p.m. as a standard deviation and the maximum observed deviation was 2 p.p.m.

中文翻译：

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使用高精度角度编码器进行绝对X射线能量测量

本文介绍了一种使用邦德衍射仪的绝对X射线光子能量测量方法。所提出的系统能够在较宽的能量范围内迅速而迅速地进行光子能量的原位测量。衍射仪使用参考硅单晶板和称为SelfA的高精度角度编码器。该系统的性能是通过反复测量40核素钾的第一激发态的能量来评估的。激励能量确定为29829.39（6）eV，这比以前的测量精度高一个数量级。光子能量测量的估计不确定度为0.7 ppm作为标准偏差，最大观察到的偏差为2 ppm