Portable active interrogation system

✍ Scribed by C.E. Moss; M.W. Brener; C.L. Hollas; W.L. Myers

• Publisher: Elsevier Science
• Year: 2005
• Tongue: English
• Weight: 183 KB
• Volume: 241
• Category: Article
• ISSN: 0168-583X
• DOI: 10.1016/j.nimb.2005.07.134

✦ Synopsis

The system consists of a pulsed DT neutron generator (5 • 10 7 n/s) and a portable but high intrinsic efficiency, custom-designed, polyethylene-moderated 3 He neutron detector. A multichannel scaler card in a ruggedized laptop computer acquires the data. A user-friendly LabVIEW program analyzes and displays the data. The program displays a warning message when highly enriched uranium or any other fissionable materials is detected at a specified number of sigmas above background in the delayed region between pulses. This report describes the system and gives examples of the response of the system to highly enriched uranium and some other fissionable materials, at several distances and with various shielding materials.