What is the microfocal X-ray source among the types of X-ray sources?

Microfocus X-ray source, abbreviated as MFX, refers to an X-ray source with a focal size less than 20 microns.

In X-ray detection equipment, X-rays emitted from a microfocal X-ray source pass through the sample and are then imaged by an X-ray flat panel detector. Due to the different penetration abilities of X-ray through different structures and materials within the sample, its internal structure can be captured by X-ray flat panel detectors and presented on a computer.

According to the different sealing methods, microfocal X-ray sources are divided into two types: open tube and closed tube. In a microfocal X-ray source with a closed tube, both the cathode target and anode target are enclosed in a vacuum tube; There is no need to vacuum or maintain during use, but it is also impossible to replace the cathode target and anode target. The open tube microfocal X-ray source is equipped with a vacuum pump and vacuum valve, similar to an exhaust device. Both cathode and anode targets can be replaced and require regular maintenance.

Compared to closed tube microfocal X-ray sources, open tube microfocal X-ray sources generally have smaller focal size and FOD, but require maintenance and are expensive. Currently, closed tube microfocal X-ray sources are commonly used in industrial non-destructive testing. Only in scientific X-ray imaging that requires more stringent imaging results, more expensive open tube microfocal X-ray sources are used.