| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1877834 | Applied Radiation and Isotopes | 2011 | 4 Pages |
Abstract
A non-destructive active assay method was developed for revealing illicit trafficking of uranium. Photoneutrons produced in beryllium or heavy water by bremsstrahlung from a linac induced fission in the samples. Delayed fission neutrons were detected by a neutron collar built up of 3He counters embedded in polyethylene moderator. High-enriched uranium samples shielded and unshielded by lead up to 14 mm thickness were detected, with a performance practically unaltered. 25 mg 235U can be revealed in a 1 min interrogation time.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Radiation
Authors
L. Lakosi, C. Tam Nguyen, E. Serf,