The Manufacturing of Large Soft X-ray Flourescence Detectors

At present the need for a large area, 100 square centimeters or greater, soft x-ray fluorescence detector with high detection efficiency is required for material science and x-ray absorption spectroscopy. The current methods of detection used in x-ray absorption spectroscopy are subject to poor collection efficiency, large background and vacuum risk. It is the task of this grant to develop a multiplier device that can offer good detection efficiency and optimal collection of the fluorescence signal without risk of affecting the vacuum. To do this a multiplier device comprising of Lead Silicate glass will be manufactured with a large collection area. The device will be made utilizing a glass frit process on a machined substrate with a specially enhanced coating. At present these manufacturing methods are not known and will be investigated. The manufacturing processes will be researched using small sample sizes. Substrate material, glass material, fritting process, and coatings will be investigated for the detection of fluorescence. The grant will finalize these materials and processes. COMMERCIAL APPLICATIONS:This new device will enhance instruments for surface science applications which will open the field across electronics and magnetic materials, steel and nonferrous metals, ceramics, cement, machines, food, medicine, fruit trees, paints, cosmetics, and moreover, crime investigations and environmental pollution analysis.