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#!/usr/bin/env python3
"""
Depth profile of an opaque sample.
"""
import bornagain as ba
from bornagain import ba_plot as bp, deg, nm
# beam data
ai_min = 0 # minimum incident angle
ai_max = 1*deg # maximum incident angle
wl = 0.03*nm # wavelength
# depth position span
z_min = -400*nm
z_max = 100*nm
def get_sample():
# Define materials
material_vac = ba.RefractiveMaterial("Vac", 0, 0)
material_A = ba.RefractiveMaterial("A", 1e-5, 3e-6)
# Define layers
layer_top = ba.Layer(material_vac)
layer_1 = ba.Layer(material_A, 300*nm)
layer_bot = ba.Layer(material_vac)
# Define sample
sample = ba.Sample()
sample.addLayer(layer_top)
sample.addLayer(layer_1)
sample.addLayer(layer_bot)
return sample
def get_simulation(sample):
"""
Returns a depth-probe simulation.
"""
nz = 500
na = 10*nz
scan = ba.AlphaScan(na, ai_min, ai_max)
scan.setWavelength(wl)
footprint = ba.FootprintSquare(0.01)
scan.setFootprint(footprint)
z_axis = ba.EquiDivision("z", nz, z_min, z_max)
simulation = ba.DepthprobeSimulation(scan, sample, z_axis)
return simulation
if __name__ == '__main__':
sample = get_sample()
simulation = get_simulation(sample)
result = simulation.simulate()
from bornagain import ba_check
ba_check.persistence_test(result)
plotargs['aspect'] = 'auto'
plotargs['intensity_min'] = 1e-200
plotargs['intensity_max'] = 1
bp.plot_datafield(result, **plotargs)
from bornagain import ba_check
ba_check.persistence_test(result)
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