| 摘要 |
<p>The assay of a drum (18) is performed by treating the drum as a collection of virtual subvolumes, each separately treated in the system response. Then, neutron measurements are made so as to include azimuthal orientation and time relative to a generator pulse in the data stream. An external matrix probe (100) provides a detailed measure of neutron transmission through a drum, so that scans of mock-up drums (114) can be compared to the scan of a target drum (18), so that appropriate system response functions can be determined.</p> |
