TY - GEN
T1 - High-Energy X-ray Phase Tomography Using Grating Interferometer with Structured Anode X-ray Source
AU - Kimura, Kenji
AU - Sun, Mengran
AU - Ueda, Ryosuke
AU - Wu, Yanlin
AU - Pan, Haogie
AU - Momose, Atsushi
N1 - Funding Information:
This work was supported by ERATO grant number JPMJER1403 of the Japan Science and Technology Agency (JST). We appreciate the technical support provided by Dr. Vladimir Semenov, Ms. Sylvia Lewis, and Dr. Wenbing Yun with Sigray, Inc. for the operation of the structured-anode X-ray source. We also thank Dr. Katsumasa Ikematsu, Dr. Pascal Meyer, and Dr. Jürgen Mohr for the fabrication of the amplitude gratings.
Publisher Copyright:
© 2021 SPIE.
PY - 2021
Y1 - 2021
N2 - For high-energy X-ray phase tomography, an inverse Talbot-Lau interferometer using a structured-anode X-ray source has been constructed. The structured anode has a tungsten line-and-space pattern whose period is 3 μm. Thanks to the inverse geometry, a thick amplitude grating with a moderate aspect ratio is available for G2, resulting in a design energy of 82 keV. After confirming the operation of the source as expected, high-energy X-ray phase tomography was applied to a dry battery, which shows little transmission around 30 keV. Structural change in the negative electrode is depicted between tomograms reconstructed from scattering (dark-field) images of a fresh dry battery and identical fully-discharged one. From the viewpoint of practical application to nondestructive testing and medicine, exploring high-energy X-ray phase imaging is important. This result suggests that the use of the structured-anode X-ray source is effective for this purpose thus avoiding the challenge of developing extremely high-aspect-ratio gratings. If the period of the structured anode is reduced further, it will also be possible to remove G2.
AB - For high-energy X-ray phase tomography, an inverse Talbot-Lau interferometer using a structured-anode X-ray source has been constructed. The structured anode has a tungsten line-and-space pattern whose period is 3 μm. Thanks to the inverse geometry, a thick amplitude grating with a moderate aspect ratio is available for G2, resulting in a design energy of 82 keV. After confirming the operation of the source as expected, high-energy X-ray phase tomography was applied to a dry battery, which shows little transmission around 30 keV. Structural change in the negative electrode is depicted between tomograms reconstructed from scattering (dark-field) images of a fresh dry battery and identical fully-discharged one. From the viewpoint of practical application to nondestructive testing and medicine, exploring high-energy X-ray phase imaging is important. This result suggests that the use of the structured-anode X-ray source is effective for this purpose thus avoiding the challenge of developing extremely high-aspect-ratio gratings. If the period of the structured anode is reduced further, it will also be possible to remove G2.
KW - Grating
KW - Interferometry
KW - Non-destructive testing
KW - Phase tomography
KW - Structured-anode X-ray tube
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U2 - 10.1117/12.2595488
DO - 10.1117/12.2595488
M3 - Conference contribution
AN - SCOPUS:85123046299
T3 - Proceedings of SPIE - The International Society for Optical Engineering
BT - Developments in X-Ray Tomography XIII
A2 - Muller, Bert
A2 - Wang, Ge
PB - SPIE
T2 - Developments in X-Ray Tomography XIII 2021
Y2 - 1 August 2021 through 5 August 2021
ER -