Beam guides and neutron scattering instrumentation at the new national Spallation Neutron Source require many large neutron optical components, which are smooth, efficient, stable, and cost-effective. In order to produce neutron optics with low scatter, techniques must be developed for reducing film surface and interface roughness. This project will apply gas-cluster ion beam smoothing techniques to produce neutron optics with high efficiency and low non-specular scatter. Phase I will identifiy promising gas-cluster ion beam processing methods to support optics requirements for advanced neutron sources. The feasibility of gas-cluster ion beam smoothing will be determined for materials that are currently used for neutron optical substrates and coatings, as well as for promising new materials. Ultimately, both commercial processing services and production equipment will be provided for treating surfaces of neutron optical substrates and coatings needed for neutron research.
Commercial Applications and Other Benefits as described by the awardee: The technology should enable production of neutron optical devices having higher performance and enhanced cost-effectiveness. Other applications include next-generation optical and electronic device processing, including mirrors for extreme UV lithography and X-ray instruments, as well as electronics.
