| Autor: |
An, Kang, Yin, Yifan, Li, Fukun, Shi, Limin, Hu, Xiaolong, Tang, Jie, Zhou, Rifeng |
| Předmět: |
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| Zdroj: |
IEEE Electron Device Letters; Jan2020, Vol. 41 Issue 1, p167-170, 4p |
| Abstrakt: |
We developed a new prototype micro-multifocus X-ray source based on electron beam scanning (MMFEBS) for multi-view stationary Micro Computed Tomography (multi-view stationary Micro-CT). This micro-multifocus X-ray source includes an electron gun, electron beam deflection coils, a dynamic condensor, a flat panel transmission target and dynamic vacuum system. The electron beam is controlled by the deflection coils and sweeps back and forth on the flat panel transmission target. It hits a series of accurately-defined positions on the target, resulting in two-dimensional X-ray multi-focus array. A dynamic condensor is utilized to overcome the electron beam defocusing caused by the deflection. It guarantees the same high spatial resolution (better than $4~\mu \text{m}$) at any deflection angle. The MMFEBS, together with a rotational stage and a flat panel detector, produces a multi-view stationary Micro-CT which can obtain multi-view X-ray projection data for CT images in static condition. Micron resolution CT images obtained in our experiments showed that the MMFEBS has high resolution and good repeatability. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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