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#!/usr/bin/env python3
# /// script
# requires-python = ">=3.10"
# dependencies = ["bornagain>=25,<26"]
# ///
"""
Specular reflectometry with sliced cylinders (refractive-index variant).
A layer of cylinders defined with RefractiveMaterial is subdivided into
N horizontal slabs. Results must agree with SpecularWithSlicing2.py
(SLD-material variant), demonstrating the numerical equivalence of both
material representations.
"""
import bornagain as ba
ba.require_versions("bornagain>=25,<26")
from bornagain import angstrom, deg, nm
HEIGHT = 5 * nm
RADIUS = 5 * nm
SURF_DENSITY = 0.01 # nm^-2
N_SLICES = 3
WAVELENGTH = 1.54 * angstrom
def get_sample():
vacuum = ba.Vacuum()
substrate_color = (0.28, 0.57, 0.82)
substrate_mat = ba.RefractiveMaterial("Substrate", substrate_color, 6e-6, 2e-8)
particle_color = (0.86, 0.24, 0.18)
particle_mat = ba.RefractiveMaterial("Particle", particle_color, 6e-4, 2e-8)
cylinder = ba.Cylinder(RADIUS, HEIGHT)
particle = ba.Particle(particle_mat, cylinder)
top_layer = ba.Layer(vacuum)
top_layer.deposit2D(ba.Dilute2D(SURF_DENSITY, particle))
top_layer.setNumberOfSlices(N_SLICES)
sample = ba.Sample()
sample.addLayer(top_layer)
sample.addLayer(ba.Layer(substrate_mat))
return sample
def get_simulation(sample):
n = 500
scan = ba.AlphaScan(n, 5*deg/n, 5*deg)
scan.setWavelength(WAVELENGTH)
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()
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BornAgain
≻ git-develop
≻ Documentation ≻ Examples ≻ Specular ≻ Roughness and slicing ≻ Specular with slicing 1
