Development of a Portable Active Interrogation System for Characterizing Special Nuclear Material

被引：0
|
作者：
Moss, C. E. [1 ]
Baruzzini, M. L. [1 ]
Chichester, D. L. [2 ]
Determan, J. C. [3 ]
Hutchinson, J. D. [1 ]
Myers, W. L. [1 ]
Nelson, M. A. [1 ]
Sorensen, E. B. [1 ]
机构：
[1] Los Alamos Natl Lab, NEN 2 Adv Nucl Technol, POB 1663, Los Alamos, NM 87545 USA
[2] Idaho Natl Lab, 2351 N Blvd, Idaho Falls, ID 83415 USA
[3] Los Alamos Natl Lab, NEN 5 Syst Design & Anal, POB 1663, Los Alamos, NM 87545 USA
来源：
25TH INTERNATIONAL CONFERENCE ON THE APPLICATION OF ACCELERATORS IN RESEARCH AND INDUSTRY (CAARI 2018) | 2019年 / 2160卷
关键词：
D O I：
10.1063/1.5127708
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Detection, identification, and characterization of shielded Special Nuclear Material (SNM), and especially of Highly Enriched Uranium (HEU), often require active interrogation. Active interrogation with neutrons or high energy photons induces fission and thus causes the emission of characteristic gamma and neutron radiation. The detection of the emitted radiation with simple detector systems often only indicates the presence of SNM. Analysis of the correlations of the neutron emissions can provide characteristics of a material, such as multiplication and mass. Such analyses are used in well counters for characterizing SNM. Our system consists of a portable pulsed neutron generator and a portable list -mode neutron detection system. The neutron correlations between the intense interrogating pulses from the neutron generator are analyzed to determine characteristics of the SNM. After the last interrogating pulse, the die away is analyzed to identify the type of SNM. We report data from a variety of SNM objects and present preliminary analysis results.
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页数：6
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