Confocal depth-resolved fluorescence micro-X-ray absorption spectroscopy for the study of cultural heritage materials : a new mobile endstation at the Beijing Synchrotron Radiation Facility
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Confocal depth-resolved fluorescence micro-X-ray absorption spectroscopy for the study of cultural heritage materials : a new mobile endstation at the Beijing Synchrotron Radiation Facility
Confocal depth-resolved fluorescence micro-X-ray absorption spectroscopy for the study of cultural heritage materials : a new mobile endstation at the Beijing Synchrotron Radiation Facility
Chen, G.; Chu, S. Q.; Sun, T. X.; Sun, X. P.; Zheng, L. R.; An, P. F.; Zhu, J.; Wu, S. R.; Du, Y. H.; Zhang, J., Confocal depth-resolved fluorescence micro-X-ray absorption spectroscopy for the study of cultural heritage materials : a new mobile endstation at the Beijing Synchrotron Radiation Facility. Journal of Synchrotron Radiation 2017, 24 (5), 1000-1005.
Abstract:
A confocal fluorescence endstation for depth-resolved micro-X-ray absorption spectroscopy is described. A polycapillary half-lens defines the incident beam path and a second polycapillary half-lens at 90° defines the probe sample volume. An automatic alignment program based on an evolutionary algorithm is employed to make the alignment procedure efficient. This depth-resolved system was examined on a general X-ray absorption spectroscopy (XAS) beamline at the Beijing Synchrotron Radiation Facility. Sacrificial red glaze (AD 1368–1644) china was studied to show the capability of the instrument. As a mobile endstation to be applied on multiple beamlines, the confocal system can improve the function and flexibility of general XAS beamlines, and extend their capabilities to a wider user community.
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Funding Info:
This work was funded by the National Natural Science Foundation of China (award no. 11375229; award no.
11135008; award no. 11375027; award No. 11275265).