Gas avalanche neutron detector
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United States of America Patent
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Mar 10, 2015
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N/A
app pub date -
Sep 12, 2012
filing date -
Sep 12, 2011
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Abstract
A gas avalanche neutron detector (GAND) filled with counting gas for detecting thermal neutrons or neutron radiation without the use of a conventional proportional counter is provided. The GAND may include a layer of thermalization material, a cathode having a face with a layer of material, exhibiting neutron capture followed by charged particle emission such as Boron-10, a microstructure amplifier, and an anode. Thermal neutrons may enter the detector and interact with the material on the face of the cathode producing alpha particles. The alpha particles may ionize the counting gas inside the detector and produce ionization electrons. The cathode, microstructure amplifier and anode may have voltages applied that create electric fields that cause the ionization electrons to drift toward the microstructure amplifier. The microstructure then accelerates the electrons causing an avalanche effect within the gas and provides an amplification of the signal dramatically increasing neutron detection sensitivity.
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