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- W2073011214 abstract "The analysis of neutron reflectivity data to obtain nuclear scattering length density profiles is akin to the notorious phaseless Fourier problem, well known in many fields such as crystallography. Current methods of analysis culminate in the refinement of a few parameters of a functional model, and are often preceded by a long and laborious process of trial and error. We start by discussing the use of maximum entropy for obtaining “free-form” solutions of the density profile, as an alternative to the trail and error phase when a functional model is not available. Next we consider a Bayesian spectral analysis approach, which is appropriate for optimising the parameters of a simple (but adequate) type of model when the number of parameters is not known. Finally, we suggest a novel experimental procedure, the analogue of astronomical speckle holography, designed to alleviate the ambiguity problems inherent in traditional reflectivity measurements." @default.
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- W2073011214 date "1991-08-01" @default.
- W2073011214 modified "2023-10-13" @default.
- W2073011214 title "Analysis of neutron reflectivity data: maximum entropy, Bayesian spectral analysis and speckle holography" @default.
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- W2073011214 doi "https://doi.org/10.1016/0921-4526(91)90042-d" @default.
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