Synchrotron Light Research Institute, Muang, Nakhon Ratchasima 30000, Thailand.
J Synchrotron Radiat. 2012 Nov;19(Pt 6):930-6. doi: 10.1107/S0909049512040381. Epub 2012 Oct 18.
Beamline BL8 of the Synchrotron Light Research Institute (Thailand) is routinely operated for X-ray absorption spectroscopy (XAS) in an intermediate photon energy range (1.25-10 keV). The photon energy is scanned by using a double-crystal monochromator, the crystal pair of which can be interchanged among KTP(011), InSb(111), Si(111) and Ge(220). The experimental set-up conveniently facilitates XAS measurements in transmission and fluorescence-yield modes at several K-edges of elements ranging from magnesium to zinc. Instrumentation and specification of the beamline and the XAS station are described, together with the determination of the available photon flux [0.1-6 × 10(10) photon s(-1) (100 mA)(-1)], energy resolution (1-5 × 10(-4)) and stability of photon energy calibration (0.07 eV), representing the beamline performance. Data quality and accuracy of XANES and EXAFS measured at BL8 are compared with those of other well established beamlines. A noted distinction of BL8 is its relatively high sensitivity for studying phosphorous, sulfur and chlorine in diluted systems and its maximum beam size of 14 mm (width) × 1 mm (height), which is suitable for bulk characterization.
泰国同步辐射光源研究所（Synchrotron Light Research Institute，Thailand）的 BL8 光束线通常用于中能区（1.25-10keV）的 X 射线吸收光谱学（XAS）。光子能量通过使用双晶单色器进行扫描，该晶体对可以在 KTP(011)、InSb(111)、Si(111)和 Ge(220)之间进行互换。该实验装置方便地促进了从镁到锌的几个元素 K 边的透射和荧光产额模式下的 XAS 测量。本文描述了光束线和 XAS 站的仪器和规格，以及可用的光子通量[0.1-6×10(10)光子 s(-1)（100 mA）(-1)]、能量分辨率（1-5×10(-4))和光子能量校准稳定性（0.07 eV）的确定，这些代表了光束线的性能。在 BL8 测量的 XANES 和 EXAFS 的数据质量和准确性与其他成熟的光束线进行了比较。BL8 的一个显著特点是它在研究稀释体系中的磷、硫和氯方面具有相对较高的灵敏度，以及其 14mm（宽度）×1mm（高度）的最大光束尺寸，这非常适合进行体相表征。
