High-efficiency neutron detectors and methods of making same

Details High-efficiency neutron detectors and methods of making same High-efficiency neutron detectors and methods of making same

2007-01-16

2007-01-16

Porta, David (Department: 2884)

Radiant energy

Invisible radiant energy responsive electric signalling

Neutron responsive means

Reexamination Certificate

active

10695019

ABSTRACT:
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 as10B or6LiF. 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.

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