e-Article
Differential die-away technology applied to detect special nuclear materials
Document Type
Article
Author
Source
Nuclear Engineering and Technology, 55(7), pp.2483-2488 Jul, 2023
Subject
Language
English
ISSN
2234-358X
1738-5733
1738-5733
Abstract
Differential die-away analysis (DDAA) technology is a special nuclear material (SNM) active detection analysis technology. Be a nuclear material shielded or not, the technology can reveal the existence of nuclear materials by inducing fission from an external pulsed neutron source. In this paper, a detection model based on DDAA analysis technology was established by geant4 Monte Carlo simulation software, and the optimal sensitivity of the detection system is achieved by optimizing different configurations. After the geant4 simulation and optimization, a prototype was established, and experimental research was carried out. The result shows that the prototype can detect 200 g of 235U in a steel cylinder shield that's of 1.5 cm in inner diameter, 10 cm in thickness and 280 kg in weight