Design and characterization of high energy micro-CT with a laser-based X-ray source
| Autor: | Fang Tan, Yan Yonghong, Feng Lu, Bin Zhu, Wei Fan, Yang Yue, Minghai Yu, Liang Li, Yuqiu Gu, Xiao-Hui Zhang, Si-Yuan Zhang, Kegong Dong, Gang Li, Cao Leifeng, Yuchi Wu, Weimin Zhou, Zhang Tiankui, Zongqing Zhao |
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| Rok vydání: | 2018 |
| Předmět: |
010302 applied physics
Physics - Instrumentation and Detectors Tomographic reconstruction Pixel business.industry Statistical noise Computer science Detector General Physics and Astronomy FOS: Physical sciences 02 engineering and technology Instrumentation and Detectors (physics.ins-det) 021001 nanoscience & nanotechnology 01 natural sciences lcsh:QC1-999 Optics Nondestructive testing 0103 physical sciences Tomography 0210 nano-technology business Projection (set theory) Image resolution lcsh:Physics |
| Zdroj: | Results in Physics, Vol 14, Iss, Pp-(2019) |
| DOI: | 10.48550/arxiv.1809.02354 |
| Popis: | The increasingly demand for machining accuracy and product quality excites a great interest in high-resolution non-destructive testing (NDT) methods, but spatial resolution of conventional high-energy computed tomography (CT) is limited to sub-millimeter because of large X-ray spot size. Therefore, we propose a novel high-resolution high-energy CT based on laser-driven X-ray source and prove its feasibility to allow high-spatial-resolution tomographic imaging of dense objects. A numerical model is developed with a consideration of realistic factors including parameter fluctuations, statistical noise and detecting efficiency. By using modulation transfer functions, the system performance is quantitatively characterized and optimized in terms of source characteristics, detector aperture, geometrical configuration and projection parameters. As a result, the simulated tomography for a high-density object (up to 19.35g/cm3) achieves a basic spatial resolution of 64.9{\mu}m. This concept expands the prospects of laser-based compact X-ray sources and shows a great potential to achieve high-perspectivity micro-CT imaging for various industrial applications. Comment: 12 pages, 9 figures |
| Databáze: | OpenAIRE |
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