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SiC Schottky Diode Detectors for Measurement of Actinide Concentrations from Alpha Activities in Molten Salt Electrolyte [electronic resource].

Published:
Washington, D.C. : United States. Dept. of Energy, 2013.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Additional Creators:
Battelle Memorial Institute, United States. Department of Energy, and United States. Department of Energy. Office of Scientific and Technical Information
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Summary:
In this project, we have designed a 4H-SiC Schottky diode detector device in order to monitor actinide concentrations in extreme environments, such as present in pyroprocessing of spent fuel. For the first time, we have demonstrated high temperature operation of such a device up to 500 °C, in successfully detecting alpha particles. We have used Am-241 as an alpha source for our laboratory experiments. Along with the experiments, we have developed a multi scale model to study the phenomena controlling the device behavior and to be able to predict the device performance. Our multi scale model consists of ab initio modeling to understand defect energetics and their effect on electronic structure and carrier mobility in the material. Further, we have developed the basis for a damage evolution model incorporating the outputs from ab initio model in order to predict respective defect concentrations in the device material. Finally, a fully equipped TCAD-based device model has been developed to study the phenomena controlling the device behavior. Using this model, we have proven our concept that the detector is capable of performing alpha detection in a salt bath with the mixtures of actinides present in a pyroprocessing environment.
Report Numbers:
E 1.99:project 09-842
project 09-842
Subject(s):
Note:
Published through SciTech Connect.
01/28/2013.
"project 09-842"
Blue, Thomas; Windl, Wolfgang.
Type of Report and Period Covered Note:
Final; 07/29/2009 - 09/30/2012
Funding Information:
AC07-05ID14517
View MARC record | catkey: 14398606