Micro-X-ray absorption spectroscopy with compound refractive lenses

被引：5

作者：

Buzanich, Guenter ^{[1
,2
]}

Radtke, Martin ^{[1
]}

Reinholz, Uwe ^{[1
]}

Riesemeier, Heinrich ^{[1
]}

Streli, Christina ^{[2
]}

机构：

[1] BAM Fed Inst Mat Res & Testing, D-12489 Berlin, Germany

[2] Vienna Univ Technol, Inst Atom & Subatom Phys, A-1020 Vienna, Austria

来源：

JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY | 2012年 / 27卷 / 10期

关键词：

XRF; SPECIATION; BAMLINE;

D O I：

10.1039/c2ja30130j

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A study regarding the possibility to use compound refractive lenses (CRLs) for X-ray absorption spectroscopy (XAS) was conducted. For XAS measurements the energy of the monochromatic incident beam has to be tuned over an energy range which is broader than the energy bandwidth of a CRL. To prove that m-XAS with compound refractive lenses is possible, it had to be investigated how changes in the energy influence the beam parameters. This was done by tuning the energy around the nominal energy of the lens and recording images with a high resolution X-ray imaging setup. To investigate the changes in the spot size the scintillator was placed at the nominal focal distance and scans along the beam axis were performed. The effect on the photon flux of the incident beam due to absorption in the lens was investigated by performing XANES measurement on different reference materials with and without CRL. The results of these measurements using a CRL designed for 9 keV are shown and discussed.

引用

页码：1803 / 1808

页数：6

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