论文标题
使用高精确角度编码器的绝对X射线能量测量
Absolute X-ray energy measurement using a high-accuracy angle encoder
论文作者
论文摘要
本文提出了使用键衍射仪的绝对X射线光子能量测量方法。所提出的系统可以在广泛的能量范围内对光子能量的迅速和快速的原位测量。衍射仪使用参考硅单晶板和称为SelfA的高度精确的角度编码器。我们通过反复测量40核钾的第一个激发态的能量来评估系统的性能。激发能确定为29829.39（6）eV。它比以前的测量更精确。光子能量测量的估计不确定性为0.7 ppm，作为标准偏差，最大观察到的偏差为2 ppm。
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 in a wide energy range. The diffractometer uses a reference silicon single crystal plate and a highly accurate angle encoder called SelfA. We evaluate the performance of the system 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. It is one order of magnitude more precise than the previous measurement. The estimated uncertainty of the photon energy measurement was 0.7 ppm as a standard deviation and the maximum observed deviation was 2 ppm.
