G - Physics – 01 – N
Patent
G - Physics
01
N
G01N 9/24 (2006.01) G01N 23/20 (2006.01) G01N 23/203 (2006.01)
Patent
CA 2387004
The process comprises the steps of: collimated transmission of a main radiation (2), in particular an X or .gamma. radiation crossing the material of the panel (5); measuring (6) a scattered radiation (7) scattered under Compton effect by a particle (10) of material that is crossed by the main radiation (2), the measure (6) being carried out by a detector (6) of photons producing a signal responsive to the energy of the radiation (7) scattered by the particle (10). A spectral analysis of the scattered signal is also provided and a selection is made of the signals that are comprised within a predetermined range, discriminating the photons scattered depending upon their energy, and selecting all those comprised within a suitable range of energy with amplitude of predetermined range responsive to the material to analyse. The discriminated photons are counted or measured tracing the density profile by repeating the measure for a discrete succession of particles crossed by the main radiation (2) for all the thickness of the panel (5). The process allows to provide an apparatus easy structurally, which allows a good measuring precision of the density distribution, also at the side edges, as well as measuring the density profile also with the panel (5) in movement.
Benedetti Paolo
Blake Cassels & Graydon Llp
Imal Srl
LandOfFree
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