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High-efficiency neutron detectors and methods of making same

United States Patent

January 16, 2007
View the Complete Patent at the US Patent & Trademark Office
Argonne National Laboratory - Visit the Technology Development and Commercialization Website
Neutron detectors, advanced detector process techniques and advanced compound film designs have greatly increased neutron-detection efficiency. One embodiment of the detectors utilizes a semiconductor wafer with a matrix of spaced cavities filled with one or more types of neutron reactive material such as .sup.10B or .sup.6LiF. The cavities are etched into both the front and back surfaces of the device such that the cavities from one side surround the cavities from the other side. The cavities may be etched via holes or etched slots or trenches. In another embodiment, the cavities are different-sized and the smaller cavities extend into the wafer from the lower surfaces of the larger cavities. In a third embodiment, multiple layers of different neutron-responsive material are formed on one or more sides of the wafer. The new devices operate at room temperature, are compact, rugged, and reliable in design.
McGregor; Douglas S. (Riley, KS), Klann; Raymond (Bolingbrook, IL)
The Regents of the University of Michigan (Ann Arbor, MI)
10/ 695,019
October 29, 2003
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT This invention was made with Government support under Contract No. W-31-109-ENG-38 from the U.S. Department of Energy (DOE). The Government has certain rights in this invention.