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#!/usr/bin/env python3
"""
Spheres in a finite layer. For testing the slicing machinery.
"""
import bornagain as ba
from bornagain import ba_plot as bp, deg, nm
def get_sample():
# defining materials
vacuum = ba.RefractiveMaterial("Vacuum", 0, 0)
material_layer1 = ba.RefractiveMaterial("Layer1", 4e-6, 2e-8)
material_substrate = ba.RefractiveMaterial("Substrate", 6e-6, 2e-8)
material_particle = ba.RefractiveMaterial("Particle", 3e-5, 2e-8)
# particle
ff = ba.Sphere(5*nm)
particle = ba.Particle(material_particle, ff)
layout = ba.ParticleLayout()
layout.addParticle(particle)
# interference function
interference = ba.InterferenceHardDisk(10*nm, .002)
layout.setInterference(interference)
# layers
layer1 = ba.Layer(material_layer1, 12*nm)
layer1.setNumberOfSlices(10)
substrate = ba.Layer(material_substrate)
substrate.addLayout(layout)
sample = ba.Sample()
sample.addLayer(ba.Layer(vacuum))
sample.addLayer(layer1)
sample.addLayer(substrate)
return sample
def get_simulation(sample):
beam = ba.Beam(1e9, 0.1*nm, 0.2*deg)
n = 100
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__':
sample = get_sample()
simulation = get_simulation(sample)
result = simulation.simulate()
bp.plot_datafield(result)
bp.plt.show()
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