Performance of micro-beam X-ray absorption spectroscopy at beamline 7.2W of Synchrotron Light Research Institute

被引：0
|
作者：
Songsiriritthigul, Chomphunuch [1 ]
Chaiprapa, Jitrin [1 ]
Mothong, Narumol [1 ]
Saiyasombat, Chatree [1 ]
Suphachiaraphan, Somphong [1 ]
Wongprachanukul, Narupon [1 ]
Phanak, Mongkol [1 ]
Bumrungkoh, Denchay [1 ]
Songsiriritthigul, Prayoon [2 ,3 ]
机构：
[1] Synchrotron Light Res Inst, Nakhon Ratchasima 30000, Thailand
[2] Suranaree Univ Technol, Sch Phys, Nakhon Ratchasima 30000, Thailand
[3] Minist Higher Educ Sci Res & Innovat, Thailand Ctr Excellence Phys, Bangkok 10400, Thailand
来源：
RADIATION PHYSICS AND CHEMISTRY | 2023年 / 206卷
关键词：
X-ray absorption spectroscopy; Micro XAS; Synchrotron X-ray; OFHC copper; 304 stainless steel; Welding; SLRI BEAMLINE;
D O I：
10.1016/j.radphyschem.2023.110768
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The existing BL7.2W beamline at SLRI, initially developed for Macromolecular Crystallography, was upgraded with a Si-drift X-ray detector, sample micro-stage, and polycapillary X-ray lens to provide possibilities for ex-periments using X-ray fluorescence (XRF) imaging and micro-beam X-ray absorption spectroscopy (mu XAS) techniques. The micro X-ray beam was characterized. The beam diameter of approximately 25 mu m was deter-mined from the knife-edge scan method. The measured photon flux was 3.8 x 109, 1.8 x 109, and 6.4 x 108 photons/s for 8.0, 10.0, and 12.0 keV X-rays, respectively. Imaging XRF and mu XAS measurements were suc-cessfully performed on a welding joint of oxygen-free high thermal conductivity copper and AISI304 stainless steel. This opens opportunities for SLRI users to utilize this new measurement setup for elemental and chemical characterizations of small areas on various samples.
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页数：5
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