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#!/usr/bin/env python3
# /// script
# requires-python = ">=3.10"
# dependencies = ["bornagain>=25,<26"]
# ///
"""
Example of simulating a reflectometry experiment
with a rough sample using BornAgain.
"""
import bornagain as ba
ba.require_versions("bornagain>=25,<26")
from bornagain import nm, deg, nm
def get_sample():
# Materials
vacuum = ba.Vacuum()
ti_color = (0.05, 0.62, 0.55)
ti_mat = ba.SLDMaterial("Ti", ti_color, -1.9493e-06, 0)
ni_color = (0.93, 0.48, 0.14)
ni_mat = ba.SLDMaterial("Ni", ni_color, 9.4245e-06, 0)
substrate_color = (0.28, 0.57, 0.82)
substrate_mat = ba.SLDMaterial("SiSubstrate", substrate_color, 2.0704e-06, 0)
# roughness
autocorr = ba.SelfAffineFractalModel(1*nm, 0.7, 25*nm)
transient = ba.TanhTransient()
roughness = ba.Roughness(autocorr, transient)
# Layers
ambient_layer = ba.Layer(vacuum)
ti_layer = ba.Layer(ti_mat, 3*nm, roughness)
ni_layer = ba.Layer(ni_mat, 7*nm, roughness)
substrate_layer = ba.Layer(substrate_mat, roughness)
# Periodic stack
n_repetitions = 10
stack = ba.LayerStack(n_repetitions)
stack.addLayer(ti_layer)
stack.addLayer(ni_layer)
# Sample
sample = ba.Sample()
sample.addLayer(ambient_layer)
sample.addStack(stack)
sample.addLayer(substrate_layer)
return sample
def get_simulation(sample):
n = 500
scan = ba.AlphaScan(n, 2*deg/n, 2*deg)
scan.setWavelength(0.154*nm)
return ba.SpecularSimulation(scan, sample)
if __name__ == '__main__':
sample = get_sample()
ba.showSample3D(sample, sample_size=120*nm, seed=0)
simulation = get_simulation(sample)
result = simulation.simulate()
ba.plot_datafield(result)
ba.plt.show()
|
BornAgain
≻ git-develop
≻ Documentation ≻ Examples ≻ Specular ≻ Roughness and slicing ≻ Specular simulation with roughness
