This section provides a bird’s-eye view of the functionality provided by BornAgain.
Operation modes
Fitting of simulations to measured data
Interactions via Python scripts or graphical user interface (GUI)
Instrument models
Experiment types
Specular reflectometry
Off-specular scattering
Grazing-incidence small-angel scattering (GISAS)
Small-angel scattering (SAS)
Beam
Polarized or unpolarized neutrons
X-rays
Divergence of the beam (wavelength, incident angles) according to different distributions
Beam with angular divergence
Detector
Spherical detectors, defined by their angular range
Rectangular detectors, defined by their size and relative position to the sample
Optional polarization analysis
Background/noise
Background of constant intensity
Poisson noise
Sample Models
Multilayers
Multilayers with arbitrary number of layers
Optional roughness of layer interfaces
Correlation between different interface roughness profiles
Magnetic materials
Multilayered structure with roughness
Particles
Library of basic shapes of particles (form factors)
Particles with inner structures
Possibility to assemble complex particle shapes from the basic ones
Size distribution of particles (polydispersity)
Selection of available shapes: basic shapes, combinations of particles, core-shell particles and polydisperse particles
Positions of particles
In BornAgain, the in-plane and out-of-plane positions of particles are decoupled. Out-of-pane positions are set by the user to a specific value for each particle, while the correlation between the in-plane positions is encoded by an interference function.
Out-of-plane: particles at specific depth in layers or on top.
Deposited or embedded layers of particles
In-plane correlations
Fully disordered systems
Short-range order (paracrystals)
Two- and one-dimensional lattices
Examples of in-plane distributions of particles: disordered and 2D lattice
