Time-dependent delayed signatures from energetic photon interrogations

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS

卷:261

Article; Proceedings Paper

Norman, Daren R. ; Jones, James L. ; Blackburn, Brandon W. ; Haskell, Kevin J. ; Johnson, James T. ; Watson, Scott M. ; Hunt, Alan W. ; Spaulding, Randy ; Harmon, Frank

关键词: photonuclear;    nuclear materials detection;    explosives detection;    gamma-ray spectroscopy;    HPGe detector;    time-dependent signatures;   

DOI  :  10.1016/j.nimb.2007.04.288

来源: Elsevier

【 摘 要 】

Pulsed photonuclear interrogation environments generated by 8-24 MeV electron linac are rich with time-dependent, material-specific, radiation signatures. Nitrogen-based explosives and nuclear materials can be detected by exploiting these signatures in different delayed-time regions. Numerical and experimental results presented in this paper show the unique time and energy dependence of these signatures. It is shown that appropriate delayed-time windows are essential to acquire material-specific signatures in pulsed photonuclear assessment environments. These developments demonstrate that pulsed, high-energy, photon-inspection environments can be exploited for time-dependent, material-specific signatures through the proper operation of specialized detectors and detection methods. (c) 2007 Elsevier B.V. All rights reserved.

【 授权许可】

Free