Some Aspects Related to Control of Nuclear Materials – Internal and Transfrontier Cases – in Romania

2010 ◽  
pp. 139-146
Author(s):  
Bogdan Constantinescu
Keyword(s):  
Nuclear Materials

FLASH X-RAY DEVICES FOR PUMPING NUCLEAR MATERIALS DEVELOPED IN THE GAMMA-RAY LASER PROGRAM AT TEXAS

1987 ◽  
Vol 48 (C9) ◽  
pp. C9-367-C9-370
Author(s):  
C. B. COLLINS ◽  
F. DAVANLOO ◽  
T. S. BOWEN ◽  
J. J. COOGAN
Keyword(s):  
Gamma Ray ◽  
Nuclear Materials ◽  
X Ray

scholarly journals New Results on Radioactive Mixture Identification and Relative Count Contribution Estimation

Sensors ◽  
2021 ◽  
Vol 21 (12) ◽  
pp. 4155
Author(s):  
Bulent Ayhan ◽  
Chiman Kwan
Keyword(s):  
Deep Learning ◽  
Noise Source ◽  
Simulated Data ◽  
Nuclear Material ◽  
Machine Learning Algorithms ◽  
Detector Response ◽  
Nuclear Materials ◽  
Ratio Estimation ◽  
Analysis Software ◽  
Detector Distance

Detecting nuclear materials in mixtures is challenging due to low concentration, environmental factors, sensor noise, source-detector distance variations, and others. This paper presents new results on nuclear material identification and relative count contribution (also known as mixing ratio) estimation for mixtures of materials in which there are multiple isotopes present. Conventional and deep-learning-based machine learning algorithms were compared. Realistic simulated data using Gamma Detector Response and Analysis Software (GADRAS) were used in our comparative studies. It was observed that a deep learning approach is highly promising.

scholarly journals SiLiF Neutron Counters to Monitor Nuclear Materials in the MICADO Project

Sensors ◽  
2021 ◽  
Vol 21 (8) ◽  
pp. 2630
Author(s):  
Luigi Cosentino ◽  
Quentin Ducasse ◽  
Martina Giuffrida ◽  
Sergio Lo Meo ◽  
Fabio Longhitano ◽  
...  
Keyword(s):  
Radioactive Waste ◽  
Detector Response ◽  
Nuclear Materials ◽  
Spent Fuel ◽  
Neutron Detectors ◽  
Intermediate Level Radioactive Waste ◽  
Eu Project ◽  
Interim Storage ◽  
Waste Drums

In the framework of the MICADO (Measurement and Instrumentation for Cleaning And Decommissioning Operations) European Union (EU) project, aimed at the full digitization of low- and intermediate-level radioactive waste management, a set of 32 solid state thermal neutron detectors named SiLiF has been built and characterized. MICADO encompasses a complete active and passive characterization of the radwaste drums with neutrons and gamma rays, followed by a longer-term monitoring phase. The SiLiF detectors are suitable for the monitoring of nuclear materials and can be used around radioactive waste drums possibly containing small quantities of actinides, as well as around spent fuel casks in interim storage or during transportation. Suitable polyethylene moderators can be exploited to better shape the detector response to the expected neutron spectrum, according to Monte Carlo simulations that were performed. These detectors were extensively tested with an AmBe neutron source, and the results show a quite uniform and reproducible behavior.

scholarly journals Novel nuclear materials characterization workflows enabled by fs-laser milling

2021 ◽  
Vol 27 (S1) ◽  
pp. 3086-3087
Author(s):  
Stephen Kelly ◽  
Robin White ◽  
Tobias Volkenandt ◽  
William Harris ◽  
Benjamin Tordoff ◽  
...  
Keyword(s):  
Materials Characterization ◽  
Nuclear Materials ◽  
Laser Milling ◽  
Fs Laser
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