Patent ID: 6459761
Filing Date: 2002-10-01
Classification: G01N,G01V

Abstract:
An inspection system for inspecting an object, the inspection device comprising:a. a source of penetrating radiation for generating a beam and for irradiating the object, the source characterized at each instant of time by an instantaneous energy spectrum and an intensity; b. at least one detector for detecting the penetrating radiation after interaction with the object; and c. a regulator for providing incident penetrating radiation having a first instantaneous spectrum dominated by photons of energies less than a first fiducial energy in a first instance wherein photons of energies less than the first fiducial energy penetrate through the object, the regulator providing incident penetrating radiation having a second instantaneous spectrum dominated by photons of energies exceeding a second fiducial energy in a second instance wherein photons of energies less than the first fiducial energy do not penetrate through the object, such that an average radiation dose is maintained below a specified level.