Physical Measurements on a 2 MeV X-ray Generator

Abstract

Further physical measurements on the X-ray beam from a 2 MeV. generator are presented. The influence of various factors on the ratio of surface ionization to peak ionization has been studied. It is concluded that most of the surface ionization arises from the air above the surface and not from the beam defining system unless it is very close to the surface. This fact is important in the design of beam defining systems in supervoltage therapy.