Hi, I would like to understand the factors influencing the intensity of x-rays in Coolidge tube. One factor would be the intensity of current in the tube, e.g., the number of electrons emitted by the cathode (the filament), I have no problem with that factor. But I read that another factor is to be the applied voltage on the tube (the potential difference between the cathode and the anode). I have difficulty understanding the effect of the voltage on the intensity of x-rays, could some one please explain it for me? Thanks in advance!