Patent ID: 7400706

Claim:
A method for detecting the safety of a liquid in a packaged liquid article by backscattering with a radiation source, said method comprising: 1) placing said packaged liquid article onto a rotatable platform; 2) emitting a beam of radiation from a radiation source, said beam of radiation causing Compton scattering at the surface of said liquid in said liquid article after passing through said liquid article's package; 3) receiving scattered photons from said Compton scattering by a detector after passing said photons through a collimator; 4) transmitting said detector's data that is to be output to a data collector, by said detector; and 5) transmitting, by said data collector, data that has been amplified and shaped by said data collector to a computer data processor, and 6) processing said amplified and shaped data to obtain a density for said liquid, then 7) comparing said density of said liquid with the densities of dangerous articles in a database, and 8) giving a warning if the density of said liquid in said liquid article is found to be consistent with that of a dangerous article in said database, by said processor.