What primarily generates X-rays in a dental radiography machine?

The generation of X-rays in a dental radiography machine primarily occurs when high-speed electrons strike a target, typically made of a material like tungsten. When these electrons, which are emitted from a heated filament in the X-ray tube, are accelerated by a high voltage and collide with the target, they lose energy. This energy loss is converted into X-rays through a process known as bremsstrahlung radiation, as well as by characteristic radiation when inner-shell electrons are ejected from the target atoms.

Choosing the correct response highlights an understanding of the essential components of the X-ray production process. Electrons striking the target is a pivotal step, as the collision results in the emission of X-rays, which are then directed towards the patient for imaging purposes. The effectiveness and efficiency of X-ray production rely on the interaction between these accelerated electrons and the target material.