Description: In this Phase I SBIR project, Synkera proposes to develop and commercialize solid-state neutron detectors of a unique architecture that will enable sensor modules for a variety of operating environment. The neutron detectors are based around nanoporous anodic aluminum oxide, and will be fabricated using a combination of gas-phase and solution-based deposition methods. The detectors will incorporate a schottky junction surrounding a neutron-conversion material. As part of this development effort we will develop the deposition methods required for the various components of the detector and use modeling to evaluate the feasibility of the design. Our solid-state neutron detectors are expected to have much larger neutron sensitivity toward fast neutrons than conventional detectors at a lower weight and much lower power requirements. These features will enable solid state neutron spectrometers meeting all the NASA requirements on weight, volume, and power. We anticipate that large detector areas can be manufactured at costs below those of conventional neutron detectors.

Benefits: In addition to NASA applications, fast neutron detectors have great potential to be used for homeland security applications. The anticipated benefits will enable wide-spread use of low-cost, large scale arrays of neutron detectors for container monitoring, port-of-entry monitoring, and other screening for the presence of illicit materials and nuclear threats.

The primary NASA application for the proposed technology is the measurement of the neutron component of radiation dose in real time. A compact detector as proposed by Synkera will allow better monitoring of astronaut radiation exposure, increasing safety and reducing risks.