### Interference - Superposition of Square Lattices

This example demonstrates how to perform a simulation of scattering from cylinders positioned in one out of a distribution of rotated square lattices.

This example is similar to Interference of a rotated square lattice.

  1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54  #!/usr/bin/env python3 import bornagain as ba from bornagain import ba_plot as bp, deg, nm def get_sample(): """ Returns a sample with cylinders on a substrate, forming a 2D lattice with different disorder rotated lattice """ m_vacuum = ba.RefractiveMaterial("Vacuum", 0, 0) m_substrate = ba.RefractiveMaterial("Substrate", 6e-6, 2e-8) m_particle = ba.RefractiveMaterial("Particle", 6e-4, 2e-8) vacuum_layer = ba.Layer(m_vacuum) substrate_layer = ba.Layer(m_substrate) p_interparticle = \ ba.Interference2DLattice(ba.SquareLattice2D(25*nm, 0)) pdf = ba.Profile2DCauchy(48*nm, 16*nm, 0) p_interparticle.setDecayFunction(pdf) particle_layout = ba.ParticleLayout() ff = ba.Cylinder(3*nm, 3*nm) position = ba.R3(0, 0, 0) cylinder = ba.Particle(m_particle, ff.clone()) cylinder.translate(position) particle_layout.addParticle(cylinder) particle_layout.setInterference(p_interparticle) vacuum_layer.addLayout(particle_layout) sample = ba.MultiLayer() sample.addLayer(vacuum_layer) sample.addLayer(substrate_layer) return sample def get_simulation(sample): beam = ba.UnitBeam(0.1*nm, 0.2*deg) detector = ba.SphericalDetector(bp.simargs['n'], 2*deg, 1*deg, 1*deg) simulation = ba.ScatteringSimulation(beam, sample, detector) distr_1 = ba.DistributionGate(0, 240*deg) simulation.addParameterDistribution("*/SquareLattice2D/Xi", distr_1, 3, 0) return simulation if __name__ == '__main__': bp.parse_args(sim_n=100) sample = get_sample() simulation = get_simulation(sample) result = simulation.simulate() bp.plot_simulation_result(result) 
Examples/scatter2d/disabled/Interference2DLatticeSumOfRotated.py