該文介紹了一款低成本的實(shí)驗(yàn)室型 X 射線吸收光儀，激發(fā)端使用了傳統(tǒng)的 X 射線管，配合bent Johann 型晶體單色器。該儀器專(zhuān)為 4-20 keV 范圍內(nèi)的 X 射線吸收光譜研究而設(shè)計(jì)，涵蓋 3 d 過(guò)渡金屬的大部分 K 邊和5 d 過(guò)渡金屬和錒系元素 的 L 邊。在 10 keV 時(shí)能量分辨率通常在 1-5 eV 的范圍內(nèi)，具體取決于晶體分析器和布拉格角?？梢栽谕干?、熒光和成像模式下進(jìn)行測(cè)量。由于其簡(jiǎn)單的模塊化設(shè)計(jì)，光譜儀可以修改所需的額外設(shè)備和復(fù)雜的樣品環(huán)境以滿足原位研究的需求。同時(shí)該文還介紹了其余各種應(yīng)用。

Johann-type laboratory-scale x-ray absorption spectrometer with versatile detection modes

We present a low-cost laboratory X-ray absorption spectrometer that uses a conventional X-ray tube source and bent Johann-type crystal monochromators. The instrument is designed for X-ray absorption spectroscopy studies in the 4–20 keV range which covers most K edges of 3d transition metals and L edges of 5d transition metals and actinides. The energy resolution is typically in the range of 1–5 eV at 10 keV depending on the crystal analyser and the Bragg angle. Measurements can be performed in transmission, fluorescence, and imaging modes. Due to its simple and modular design, the spectrometer can be modified to accommodate additional equipment and complex sample environments required for in situ studies. A showcase of various applications is presented.

原文信息：

Honkanen, Ari-Pekka, et al. "Johann-type laboratory-scale x-ray absorption spectrometer with versatile detection modes." Review of Scientific Instruments 90.3 (2019): 033107.

文中介紹的吸收譜儀在成像模式下使用的是來(lái)自捷克Advacam公司的光子計(jì)數(shù)、混合像素X射線探測(cè)器。