Absolute X-ray energy measurement using a high-accuracy angle encoder
Absolute X-ray energy measurement using a high-accuracy angle encoder
复制标题
使用高精度角度编码器进行绝对 X 射线能量测量
DOI：
10.1107/s1600577520014526
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发表时间：
2021
影响因子：
2.5
通讯作者：
Yo
中科院分区：
文献类型：
--
作者：
Masuda Takahiko;Watanabe Tsukasa;Beeks Kjeld;Fujimoto Hiroyuki;Hiraki Takahiro;Kaino Hiroyuki;Kitao Shinji;Miyamoto Yuki;Okai Koichi;Sasao Noboru;Seto Makoto;Schumm Thorsten;Shigekawa Yudai;Tamasaku Kenji;Uetake Satoshi;Yamaguchi Atsushi;Yoda Yoshitaka;Yo
本文提出了一种使用键合衍射仪的绝对X射线光子能量测量方法。该系统能够在较宽的能量范围内对光子能量进行快速、快速的原位测量。衍射仪使用参考硅单晶板和称为SELFA的高精度角度编码器。通过重复测量K-40核素第一激发态的能量来评价该系统的性能。激发能被确定为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每分钟0.7 。作为标准偏差，最大观测偏差为2 p.p.m。
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.