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BornAgain: software for simulating and fitting grazing-incidence small-angle scattering.

Gennady Pospelov1, Walter Van Herck1, Jan Burle1

  • 1Jülich Centre for Neutron Science (JCNS) at Heinz Maier-Leibnitz Zentrum (MLZ), Forschungszentrum Jülich GmbH, Lichtenbergstrasse 1, Garching, 85748, Germany.

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|February 13, 2020
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Summary
This summary is machine-generated.

BornAgain is a free, open-source software for simulating grazing-incidence small-angle scattering (GISAS) and other scattering techniques. It offers Python scripting and a GUI for defining sample and instrument models.

Keywords:
X-ray scatteringgrazing-incidence small-angle scattering (GISAS)neutron scatteringsimulationsoftware

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Area of Science:

  • Materials Science
  • Physics
  • Computational Science

Background:

  • X-ray and neutron scattering techniques are crucial for characterizing materials at the nanoscale.
  • Accurate simulation and fitting software are essential for interpreting complex scattering data.
  • Grazing-incidence small-angle scattering (GISAS) provides information on nanoscale structures at surfaces and interfaces.

Purpose of the Study:

  • To introduce BornAgain, a new free and open-source software framework.
  • To detail the functional and non-functional requirements realized in BornAgain.
  • To focus on the capabilities of BornAgain for simulating and fitting GISAS data.

Main Methods:

  • BornAgain utilizes Python scripting for defining sample and instrument models.
  • A graphical user interface (GUI) provides an alternative for model definition.
  • The software supports neutron polarization and magnetic scattering.
  • Simulation and fitting of GISAS data are core functionalities.

Main Results:

  • BornAgain successfully implements a framework for simulating and fitting GISAS.
  • The software supports advanced features like neutron polarization and magnetic scattering.
  • Both scripting and GUI interfaces are available for user interaction.
  • The framework is designed to be multi-platform and open-source.

Conclusions:

  • BornAgain offers a versatile and accessible tool for researchers in materials science and physics.
  • The software facilitates the analysis of nanoscale structures using GISAS.
  • Future development will extend support to reflectometry and off-specular scattering.