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Thermal neutron detector and gamma-ray spectrometer utilizing a single material

United States Patent

9,638,813
May 2, 2017
View the Complete Patent at the US Patent & Trademark Office
LISe Crystals
A combined thermal neutron detector and gamma-ray spectrometer system, including: a detection medium including a lithium chalcopyrite crystal operable for detecting thermal neutrons in a semiconductor mode and gamma-rays in a scintillator mode; and a photodetector coupled to the detection medium also operable for detecting the gamma rays. Optionally, the detection medium includes a .sup.6LiInSe.sub.2 crystal. Optionally, the detection medium comprises a compound formed by the process of: melting a Group III element; adding a Group I element to the melted Group III element at a rate that allows the Group I and Group III elements to react thereby providing a single phase I-III compound; and adding a Group VI element to the single phase I-III compound and heating; wherein the Group I element includes lithium.
Stowe; Ashley (Knoxville, TN), Burger; Arnold (Nashville, TN), Lukosi; Eric (Knoxville, TN)
Consolidated Nuclear Security, LLC (Oak Ridge, TN), Fisk University (Nashville, TN), University of Tennessee Research Foundation (Knoxville, TN)
14/ 871,162
20160146953
September 30, 2015
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT The U.S. Government has rights to the present disclosure pursuant to Contract No. DE-NA0001942 between the U.S. Department of Energy and Consolidated Nuclear Security, LLC.