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#!/usr/bin/env python3
# /// script
# requires-python = ">=3.10"
# dependencies = ["bornagain>=25,<26"]
# ///
"""
Specular reflectometry of a Ti/Ni multilayer defined via scattering
length densities, including absorption.
10 bilayers of Ti (3.5 nm) and Ni (7 nm) on a Si substrate.
SLD values include the imaginary component (absorption) for all layers.
Compare AlternatingLayers.py which uses lossless SLD materials.
"""
import bornagain as ba
ba.require_versions("bornagain>=25,<26")
from bornagain import deg, nm, angstrom
def get_sample():
vacuum = ba.Vacuum()
si_color = (0.28, 0.57, 0.82)
si_mat = ba.SLDMaterial("Si_substrate", si_color, 2.0704e-6, 2.3726e-11)
ni_color = (0.93, 0.48, 0.14)
ni_mat = ba.SLDMaterial("Ni", ni_color, 9.4245e-6, 1.1423e-9)
ti_color = (0.05, 0.62, 0.55)
ti_mat = ba.SLDMaterial("Ti", ti_color, -1.9493e-6, 9.6013e-10)
vacuum_layer = ba.Layer(vacuum)
ti_layer = ba.Layer(ti_mat, 3.5*nm)
ni_layer = ba.Layer(ni_mat, 7*nm)
substrate = ba.Layer(si_mat)
n_repetitions = 10
stack = ba.LayerStack(n_repetitions)
stack.addLayer(ti_layer)
stack.addLayer(ni_layer)
sample = ba.Sample()
sample.addLayer(vacuum_layer)
sample.addStack(stack)
sample.addLayer(substrate)
return sample
def get_simulation(sample):
n = 500
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()
ba.showSample3D(sample, sample_size=80*nm, seed=0)
simulation = get_simulation(sample)
result = simulation.simulate()
ba.plot_datafield(result)
ba.plt.show()
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BornAgain
≻ git-develop
≻ Documentation ≻ Examples ≻ Specular ≻ Basics ≻ Homogeneous Ti Ni sample with absorption
