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#!/usr/bin/env python3
# /// script
# requires-python = ">=3.10"
# dependencies = ["bornagain>=25,<26"]
# ///
"""
Specular simulation with footprint correction for a square beam
"""
import bornagain as ba
ba.require_versions("bornagain>=25,<26")
from bornagain import angstrom, deg, nm
def get_sample():
"""
Twenty alternating Ti and Ni layers on a silicon substrate.
"""
ambient_mat = ba.Vacuum()
ti_mat = ba.SLDMaterial("Ti", (0.05, 0.62, 0.55), -1.9493e-6, 0)
ni_mat = ba.SLDMaterial("Ni", (0.93, 0.48, 0.14), 9.4245e-6, 0)
substrate_mat = ba.SLDMaterial(
"SiSubstrate", (0.28, 0.57, 0.82), 2.0704e-6, 0)
stack = ba.LayerStack(10)
stack.addLayer(ba.Layer(ti_mat, 3*nm))
stack.addLayer(ba.Layer(ni_mat, 7*nm))
sample = ba.Sample()
sample.addLayer(ba.Layer(ambient_mat))
sample.addStack(stack)
sample.addLayer(ba.Layer(substrate_mat))
return sample
sample = get_sample()
def simulate(footprint, title):
n = 500
scan = ba.AlphaScan(n, 0.6*deg/n, 0.6*deg)
scan.setWavelength(1.54*angstrom)
scan.setFootprint(footprint)
simulation = ba.SpecularSimulation(scan, sample)
result = simulation.simulate()
result.setTitle(title)
return result
if __name__ == '__main__':
ba.showSample3D(sample, sample_size=120*nm, seed=0)
beam_sample_ratio = 0.01 # beam-to-sample size ratio
results = [
simulate(ba.FootprintSquare(beam_sample_ratio), "With footprint"),
simulate(None, "Without footprint"),
]
ba.plot_multicurve(results)
ba.plt.show()
|
BornAgain
≻ git-develop
≻ Documentation ≻ Examples ≻ Specular ≻ Instrument and resolution ≻ Footprint correction
