New microfocus bremsstrahlung source based on betatron B-18 for high-resolution radiography and tomography

6th International Conference: Modern Technologies for Non-Destructive Testing

Rychkov, M.M.^1 ; Kaplin, V.V.^1 ; Malikov, E.L.^1 ; Smolyanskiy, V.A.^1 ; Stepanov, I.B.^1 ; Lutsenko, A.S.^1 ; Gentsel'Man, V.^1 ; Vas'Kovskiy, I.K.^1

National Research Tomsk Polytechnic University, Tomsk, Russia^1

关键词: Control gaps;    Heavy materials;    High resolution;    Micro focus;    Micro-defects;    Photon energy;    Radiographic images;    Steel bars;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/289/1/012044/pdf
DOI  :  10.1088/1757-899X/289/1/012044

来源: IOP

【 摘 要 】

New microfocus source of hard bremsstrahlung (photon energy > 1 MeV), based on the betatron B-18 with a narrow Ta target inside, for high-resolution radiography and tomography is presented. The first studies of the source demonstrate its possibilities for practical applications to detect the microdefects in products made from heavy materials and to control gaps in joints of parts of composite structures of engineering facilities. The radiography method was used to investigate a compound object consisting of four vertically arranged steel bars between which surfaces were exposed gaps of 10 μm in width. The radiographic image of the object, obtained with a magnification of 2.4, illustrates the good sensitivity of detecting the gaps between adjacent bars, due to the small width of the linear focus of the bremsstrahlung source.