title: SUePDF: a program to obtain quantitative pair distribution functions from electron diffraction data.
abstract: SUePDFis a graphical user interface program written in MATLAB to achieve quantitative pair distribution functions (PDFs) from electron diffraction data. The program facilitates structural studies of amorphous materials and small nanoparticles using electron diffraction data from transmission electron microscopes. It is based on the physics of electron scattering as well as the total scattering methodology. A method of background modeling is introduced to treat the intensity tail of the direct beam, inelastic scattering and incoherent multiple scattering. Kinematical electron scattering intensity is scaled using the electron scattering factors. The PDFs obtained after Fourier transforms are normalized with respect to number density, nanoparticle form factor and the non-negativity of probability density.SUePDFis distributed as free software for academic users.
authors.affiliation: Department of Materials and Environmental Chemistry, Arrhenius Laboratory, Stockholm University , Svante Arrhenius väg 16C, Stockholm, S-10691, Sweden.
authors.forename: Dung Trung
authors.initials: DT
authors.lastname: Tran
authors.affiliation: Department of Materials and Environmental Chemistry, Arrhenius Laboratory, Stockholm University , Svante Arrhenius väg 16C, Stockholm, S-10691, Sweden.
authors.forename: Gunnar
authors.initials: G
authors.lastname: Svensson
authors.affiliation: Department of Materials and Environmental Chemistry, Arrhenius Laboratory, Stockholm University , Svante Arrhenius väg 16C, Stockholm, S-10691, Sweden.
authors.forename: Cheuk-Wai
authors.initials: CW
authors.lastname: Tai
keywords: disorder; electron diffraction; pair distribution functions; transmission electron microscopy