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#!/usr/bin/env python3
"""
Square lattice of half spheres on substrate with usage of average material
and slicing
"""
import bornagain as ba
from bornagain import ba_plot as bp, deg, nm
def get_sample():
"""
Returns a sample with cylinders on a substrate.
"""
# Define materials
material_Particle = ba.RefractiveMaterial("Particle", 3e-05, 2e-08)
material_Substrate = ba.RefractiveMaterial("Substrate", 6e-06, 2e-08)
material_Vacuum = ba.RefractiveMaterial("Vacuum", 0, 0)
# Define form factors
ff = ba.TruncatedSphere(5*nm, 5*nm, 0)
# Define particles
particle = ba.Particle(material_Particle, ff)
# Define 2D lattices
lattice = ba.BasicLattice2D(10*nm, 10*nm, 90*deg, 0)
# Define interference functions
iff = ba.Interference2DLattice(lattice)
iff_pdf = ba.Profile2DCauchy(100*nm, 100*nm, 0)
iff.setDecayFunction(iff_pdf)
# Define particle layouts
layout = ba.ParticleLayout()
layout.addParticle(particle)
layout.setInterference(iff)
layout.setTotalParticleSurfaceDensity(0.01)
# Define layers
layer_1 = ba.Layer(material_Vacuum)
layer_1.setNumberOfSlices(10)
layer_1.addLayout(layout)
layer_2 = ba.Layer(material_Substrate)
# Define sample
sample = ba.MultiLayer()
sample.addLayer(layer_1)
sample.addLayer(layer_2)
return sample
def get_simulation(sample):
beam = ba.Beam(1e9, 0.1*nm, 0.2*deg)
n = bp.simargs['n']
detector = ba.SphericalDetector(n, -2*deg, 2*deg, n, 0, 2*deg)
simulation = ba.ScatteringSimulation(beam, sample, detector)
simulation.options().setUseAvgMaterials(True)
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)
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