ABSTRACT
The efficiency of x-ray photon production is determined mainly by the atomic number of the anode/target material and the kinetic energy of the electrons, the latter being determined by the voltage applied between the anode and cathode. Typical x-ray tubes use
high-atomic-number elements such as tungsten (W), molybdenum (Mo), or rhodium (Rh) as the anode material. The peak potential between the anode and cathode is controlled by the x-ray generator and ranges from 20,000 to 150,000 V (20 to 150 kV) for x-ray tubes used in biomedical applications.
