<i>BornAgain</i>: software for simulating and fitting grazing-incidence small-angle scattering
Gennady Pospelov, Walter Van Herck, Jan Burle, Juan Loaiza, Céline Durniak, Jonathan Fisher, Marina Ganeva, D. S. Yurov, Joachim Wuttke
Abstract
BornAgain is a free and open-source multi-platform software framework for simulating and fitting X-ray and neutron reflectometry, off-specular scattering, and grazing-incidence small-angle scattering (GISAS). This paper concentrates on GISAS. Support for reflectometry and off-specular scattering has been added more recently, is still under intense development and will be described in a later publication. BornAgain supports neutron polarization and magnetic scattering. Users can define sample and instrument models through Python scripting. A large subset of the functionality is also available through a graphical user interface. This paper describes the software in terms of the realized non-functional and functional requirements. The web site https://www.bornagainproject.org/ provides further documentation.