Authentication of two samples of ancient Chinese coins with component element depth analysis by confocal 3D XRF

Zhou, Peng; Liu, Zhiguo; Lin, Xiaoyan; Liu, Xin; Ye, Lei; Wang, Xingyi; Pan, Kai; Li, Yude

doi:10.1016/j.nimb.2018.03.007

Cited by 5 publications

(8 citation statements)

References 16 publications

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Section: Confocal 3d-xrf Setupmentioning

confidence: 99%

“…Figure 1 shows a schematic diagram of the confocal geometry, where the confocal volume is the overlap of the output focal spot of the polycapillary focusing x-ray lens (PFXRL) [5] and the input focal spot of the polycapillary parallel x-ray lens (PPXRL). [5] An x-ray source with a Mo target (XTG Ultra-Bright Micro-focus X-ray Source, Oxford, USA) was used. [5] The PFXRL for x-ray irradiation was attached to the x-ray source, and the PPXRL was attached to a silicon drift detector (Si-PIN) (X-123, Amptek, USA), (sensitive area: 6 mm 2 , energy resolution: 145 eV at 5.9 keV).…”

Section: Confocal 3d-xrf Setupmentioning

confidence: 99%

“…[5] An x-ray source with a Mo target (XTG Ultra-Bright Micro-focus X-ray Source, Oxford, USA) was used. [5] The PFXRL for x-ray irradiation was attached to the x-ray source, and the PPXRL was attached to a silicon drift detector (Si-PIN) (X-123, Amptek, USA), (sensitive area: 6 mm 2 , energy resolution: 145 eV at 5.9 keV). Each polycapillary lens was designed and manufactured by the College of Nuclear Science and Technology, Beijing Normal University.…”

Section: Confocal 3d-xrf Setupmentioning

confidence: 99%

“…Each polycapillary lens was designed and manufactured by the College of Nuclear Science and Technology, Beijing Normal University. [5] The input focal distance of the PFXRL was 52.9 mm, and the output focal distance of the PFXRL was 11.5 mm. The focal distance of the PPXRL was 14.9 mm.…”

Section: Confocal 3d-xrf Setupmentioning

confidence: 99%

“…The confocal volume of 3D-XRF is formed by the overlap of the output focal spot of the excitation channel and the input focal spot of the detection channel. [5] Usually, the depth resolution of a 3D-XRF setup as obtained by scanning metal foils of a certain thickness or wires using the classic method is given by [6] D = (…”

Section: Introductionmentioning

confidence: 99%

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A method for calibrating the confocal volume of a confocal three-dimensional micro-x-ray fluorescence setup*

Zhou

Zhang

et al. 2020

Chinese Phys. B

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The measurement of the confocal volume of a confocal three-dimensional micro-x-ray fluorescence (3D-XRF) setup is a key step in the field of confocal 3D-XRF analysis. With the development of x-ray facilities and optical devices, 3D-XRF analysis with a micro confocal volume will create a great potential for 2D and 3D microstructural analysis and accurate quantitative analysis. However, the classic measurement method of scanning metal foils of a certain thickness leads to inaccuracy. A method for calibrating the confocal volume is proposed in this paper. The new method is based on the basic content of the textbook, and the theoretical results and the feasibility are given in detail for the 3D-XRF mono-chromatic x-ray condition and the poly-chromatic x-ray condition. We obtain a set of experimental confirmation using the poly-chromatic x-ray tube in the laboratory. It is proved that the sensitivity factor of the 3D-XRF can be directly and accurately obtained in a real calibration process.

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Section: Confocal 3d-xrf Setupmentioning

confidence: 99%