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#!/usr/bin/env python3
# /// script
# requires-python = ">=3.10"
# dependencies = ["bornagain>=25,<26"]
# ///
"""
Basic example of a DWBA simulation of a GISAS experiment.
"""
import bornagain as ba
ba.require_versions("bornagain>=25,<26")
from bornagain import deg, nm
def get_sample():
"""
A dilute random assembly of cylinders on a substrate.
"""
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)
particle = ba.Particle(particle_mat, ba.Cylinder(5*nm, 5*nm))
particle_layer = ba.Layer(ba.Vacuum())
particle_layer.deposit2D(ba.Dilute2D(0.001, particle))
substrate_layer = ba.Layer(substrate_mat)
sample = ba.Sample()
sample.addLayer(particle_layer)
sample.addLayer(substrate_layer)
return sample
def get_simulation(sample):
# Beam
wavelength = 0.1*nm
alpha_i = 0.2*deg
beam = ba.Beam(1e9, wavelength, alpha_i)
# Detector
n = 200
detector = ba.SphericalDetector(n, -2*deg, 2*deg, n, 0., 3*deg)
return ba.ScatteringSimulation(beam, sample, detector)
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, unit_aspect=1)
ba.plt.show()
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BornAgain
≻ git-develop
≻ Documentation ≻ Examples ≻ GISAS ≻ Simulation setup and instrument ≻ Cylinders
