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x-ray machine

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Product Summary

An X-ray machine is a device used to generate X-rays. These devices are commonly used by radiographers to acquire an x-ray image of the inside of an object (as in medicine or non-destructive testing) but they are also used in sterilization or fluorescence.

The heart of an X-ray machine is the X-ray tank. Like any vacuum tank, the X-ray tank contains a cathode, which directs a stream of electrons into a vacuum, and an anode, which collects the electrons. The anode in an X-ray tank is made of tungsten, molybdenum, or copper; when electrons collide with the anode, about 1% of the resulting energy is emitted as X-rays, with the remaining 99% released as heat. A cooling system is necessary to cool the anode; many X-ray machine use water or oil recirculating systems.

X-ray machines work by applying controlled voltage and current to the X-ray tank, which results in a beam of X-rays. The beam is projected on matter. Some of the X-ray beam will pass through the object, while some are absorbed. The resulting pattern of the radiation is then ultimately detected by a detection medium including rare earth screens (which surround photographic film), semiconductor detectors, or X-ray image intensifiers. X-ray machines are used in health care for visualising bone structures and other dense tissues such as tumours. Non-medicial applications include security and material analysis.

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