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#!/usr/bin/env python3
"""
Basic example of specular reflectometry simulation.
The sample consists of 20 alternating Ti and Ni layers.
"""
import bornagain as ba
from bornagain import ba_plot as bp, deg, angstrom
def get_sample():
# Materials
vacuum = ba.MaterialBySLD("Vacuum", 0, 0)
material_Ti = ba.MaterialBySLD("Ti", -1.9493e-06, 0)
material_Ni = ba.MaterialBySLD("Ni", 9.4245e-06, 0)
material_Si = ba.MaterialBySLD("Si", 2.0704e-06, 0)
# Layers
top_layer = ba.Layer(vacuum)
ti_layer = ba.Layer(material_Ti, 30*angstrom)
ni_layer = ba.Layer(material_Ni, 70*angstrom)
substrate = ba.Layer(material_Si)
# Periodic stack
n_repetitions = 10
stack = ba.LayerStack(n_repetitions)
stack.addLayer(ti_layer)
stack.addLayer(ni_layer)
# Sample
sample = ba.Sample()
sample.addLayer(top_layer)
sample.addStack(stack)
sample.addLayer(substrate)
return sample
def get_simulation(sample):
n = 50
scan = ba.AlphaScan(n, 2*deg/n, 2*deg)
scan.setWavelength(1.54*angstrom)
return ba.SpecularSimulation(scan, sample)
if __name__ == '__main__':
sample = get_sample()
simulation = get_simulation(sample)
result = simulation.simulate()
from bornagain import ba_check
ba_check.persistence_test(result)
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