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research papers
The parasitic scattering of several materials used as windows in small-angle scattering experiments, including IF-1 beryllium, Kapton, Mylar, mica and glass has been measured over the q range 0.05–2.0 nm−1 with Cu Kα radiation (q = 4πsinθ/λ, 2θ = scattering angle). Based on the criteria of high strength, high transmission and low parasitic scattering, the best material was found to be IF-1 beryllium.