Discrimination of weapons-grade plutonium from thermal reactors in nuclear forensics

被引：0
|
作者：
G. Nikolaou
S. R. Biegalski
机构：
[1] Demokritus University of Thrace,Department of Electrical and Computer Engineering
[2] Georgia Institute of Technology,The George Woodruff School of Mechanical Engineering
来源：
Journal of Radioanalytical and Nuclear Chemistry | 2019年 / 322卷
关键词：
Weapons-grade Pu; Nuclear forensics; Isotopic fingerprinting; Isotopic correlations;
D O I：
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中图分类号：
学科分类号：
摘要：
A simulated fingerprinting approach is demonstrated, aiming the discrimination of weapons-grade plutonium (WG-Pu) from different reactors. Light and heavy water and graphite moderated thermal reactors are considered, charged with fresh fuel assemblies of different enrichments. The plutonium isotopic composition is considered as the required characteristic fingerprints in the approach. Hence, plutonium isotopic ratios are used in 3D isotopic correlations for the discrimination purposes. The WG-Pu from the different reactors is well resolved between them. Within the light water moderated cases, the WG-Pu is resolved in groups according to their fresh fuel enrichment and the reactor and fuel assembly type. The fingerprinting approach is sensitive to a ‘Pu age’ beyond 0.5 years.
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页码：513 / 518
页数：5
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