3D reconstruction of radioactive sample utilizing gamma tomography
作者： David Zoul , Pavel Zháňal
DOI: 10.1016/J.NIMA.2018.03.071
关键词: 3D reconstruction 、 Radon space 、 Tomography 、 Software 、 Optics 、 Physics 、 Sample (graphics) 、 Stepper 、 Collimator 、 Resolution (electron density)
摘要: Abstract Unique three-dimensional (3D) tomography apparatus was developed and successfully tested at Research Centre Rez, which concentrates investigation of the degradation microstructural mechanical properties structural materials nuclear reactors components after a long-term operating exposure. The allows 3D view into interior low-dimension radioactive samples with diameter up to several centimeters resolution in order cubic millimeters. It is designed detect domains different levels radioactivity such as cavities, cracks or regions chemical composition. unique collimator design, use stepper motors for fine accurate sample scanning, along advanced image reconstruction software enables approaching 1 mm 3. Devices working on similar principle have been used decades, e.g., medicine diagnosis malignant tumors, are increasingly being applied industry. However, first time equipment non-destructive testing samples.
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