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Multiple small angle neutron scattering: A new two-dimensional ultrasmall angle neutron scattering technique

2007; American Institute of Physics; Volume: 91; Issue: 20 Linguagem: Inglês

10.1063/1.2809605

1520-8842

C. Grünzweig, Thomas Hils, S. Mühlbauer, M. Ay, Klaus Lorenz, R. Georgii, R. Gähler, P. Böni,

X-ray Diffraction in Crystallography

We report on the demonstration experiment of the multiple small angle neutron scattering (MSANS) technique at a 5.6m long neutron beam line, leading to a q resolution of 3×10−4Å−1. The MSANS technique is based on two two-dimensional multihole apertures placed at the front end of the collimator and close to the sample, respectively. By choosing the proper MSANS geometry, individual diffraction patterns are superimposed leading to a large gain in intensity. Using MSANS as an option for standard small angle neutron scattering beam lines, the q resolution could be increased to 10−5Å−1 without dramatically sacrificing intensity.