Areal density measurement technology for metal foils based on X-ray bent crystal imaging

Si Haoxuan; Xu Hao; Du Huiyao; Yi Shengzhen; Wang Zhanshan

doi:10.11884/HPLPB202335.230161

Volume 35 Issue 11

Oct. 2023

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Si Haoxuan, Xu Hao, Du Huiyao, et al. Areal density measurement technology for metal foils based on X-ray bent crystal imaging[J]. High Power Laser and Particle Beams, 2023, 35: 112001. doi: 10.11884/HPLPB202335.230161

Citation:

Si Haoxuan, Xu Hao, Du Huiyao, et al. Areal density measurement technology for metal foils based on X-ray bent crystal imaging[J]. High Power Laser and Particle Beams, 2023, 35: 112001. doi: 10.11884/HPLPB202335.230161

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Areal density measurement technology for metal foils based on X-ray bent crystal imaging

doi: 10.11884/HPLPB202335.230161

Si Haoxuan^{1, 2, 3, 4
,},
Xu Hao^{1, 2, 3, 4},
Du Huiyao^{1, 2, 3, 4},
Yi Shengzhen^{1, 2, 3, 4
,
,},
Wang Zhanshan^{1, 2, 3, 4
,
,}

1.
Institute of Precision Optical Engineering Technology, School of Physical Science and Engineering, Tongji University, Shanghai 200092, China
2.
Key Laboratory of Advanced Microstructured Materials, Tongji University, Shanghai 200092, China
3.
Shanghai Digital Optics Frontier Science Research Base, Shanghai 200092, China
4.
Shanghai Full-Spectrum High-Performance Optical Thin Film Devices and Application Professional Technical Service Platform, Shanghai 200092, China

Received Date: 2023-05-31
Accepted Date: 2023-10-11
Rev Recd Date: 2023-10-11

Available Online: 2023-10-19

Publish Date: 2023-11-11

Abstract

Abstract

In view of the measurement requirements of uniformity and areal density parameters of target metal foils, a non-destructive testing technology for high-Z metal foils by obtaining thin film X-ray transmittance and its spatial distribution through a toroidal crystal focusing type X-ray monochromatic imaging device is proposed. This technology not only effectively improves the accuracy of areal density measurement by high-throughput and high-monochromatic imaging, but also realizes high spatial resolution evaluation of thin film uniformity. This paper carries out in-depth research from the aspects of overall scheme design, component preparation and test experiment, and evaluates the influence of various possible factors on measurement uncertainty. The developed toroidal crystal imaging system achieves micro-region resolution better than 5 μm within millimeter scale for 20 keV-level high-energy X-rays, and spectral resolution reaches several eV. The feasibility of the developed technology is verified by surface density measurement experiment of foam gold sample, and relative uncertainty of areal density measurement better than 2% is obtained. This paper provides a new measurement technology for precise non-destructive testing of high-Z target materials for laser inertial confinement fusion, which is also expected to be applied to other fields that require large field of view and high spatial spectral resolution imaging.
- metal foil,
- X-ray imaging,
- toroidal crystal,
- high spectral resolution,
- surface density measurement

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References(18)

References

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