A mini-focus x-ray tube does not require an electron accelerator to produce images. It consists of an evacuated tube with a filament at one end and an electrode at the other. This design causes electrons to be emitted from the filament and accelerated towards the cathode. Here are a few of their functions and uses.
Portable and Lightweight
Mini-focus X-ray tubes are used in portable X-ray machines since they are small and lightweight. This x-ray tube emits tiny focal spots and is used for high-resolution radiography and web inspection. The image contrast is better than single-sided systems because the maximum energy is concentrated within a smaller area.
Customized
These tubes can be made according to an application’s specific requirements. They can be custom-made to fit a particular machine, making them highly functional and practical.
Detailed Imaging
A higher mA output provides more penetrating power, while a smaller focal spot size reduces blurriness due to scatter radiation, yielding more detailed images. The higher the mA, the more penetrating power it has, producing an overall better image quality with a higher resolution.
Non-Medical Applications
Mini-focus X-ray tubes are used in nondestructive testing applications. They are smaller than 3 mm and have small diameters of less than 10 millimeters. They range from 0.1 to 1 mm in diameter and have a small focal spot compared to conventional sizes, making them ideal for applications where penetration depth is required, like flaw detection on plastic components or welded steel joints.
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