METHOD AND APPARATUS FOR THE INSPECTION AND CHARACTERISATION OF MATERIALS

摘要

A method and apparatus for obtaining radiation transmission data comprising information about the composition of an object are described. The principle involves providing a radiation source such as an x-ray or gamma-ray source and a radiation detector system such as an x-ray or gamma-ray detector system, the detector system being capable of detecting and collecting spectroscopically resolvable information about incident radiation;collecting a dataset of information about radiation incident at the detector; resolving the dataset spectroscopically across a plurality of frequency bands within the spectrum of the source to produce a corresponding plurality of frequency-specific datasets; numerically analysing at least one pair of frequency-specific datasets to produce a frequency-comparative dataset; using this the better to identify materials present.