Abstract
A 950 kV X-ray source with small focal spot using a linear accelerator (LINAC) has been developed. By installing a focusing mechanism for electron beam in this system, a small focal spot (less than 0.3 mm in FWHM of Line Spread Function) is successfully achieved at 950 kV with the target electron beam current greater than 30 mA. Several comparison data of conventional focal spot are also acquired and clearer images are obtained with the small focal spot. We are convinced that this new X-ray source is useful for industrial non-destructive inspection of large structures because of high transmission ability and spatial resolution.
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