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#!/usr/bin/env python3
# /// script
# requires-python = ">=3.10"
# dependencies = ["bornagain>=25,<26"]
# ///
"""
Unpolarized GISAS of magnetic cylinders.
The same magnetic cylinder sample as MagneticCylinders.py (cylinders
with y-magnetisation 1e6 A/m, substrate 15e-6 refractive index) is
simulated without polariser or analyser. Tests the matrix computation
path for an unpolarized beam on a magnetic sample.
"""
import bornagain as ba
ba.require_versions("bornagain>=25,<26")
from bornagain import deg, nm, R3
def get_sample():
vacuum = ba.Vacuum()
substrate_color = (0.28, 0.57, 0.82)
substrate_mat = ba.RefractiveMaterial("Substrate", substrate_color, 15e-6, 0)
particle_color = (0.25, 0.65, 0.35)
particle_mat = ba.RefractiveMaterial(
"MagParticle2", particle_color, 5e-6, 0, R3(0, 1e6, 0))
ff = ba.Cylinder(5*nm, 5*nm)
particle = ba.Particle(particle_mat, ff)
vacuum_layer = ba.Layer(vacuum)
vacuum_layer.deposit2D(ba.Dilute2D(0.001, particle))
substrate_layer = ba.Layer(substrate_mat)
sample = ba.Sample()
sample.addLayer(vacuum_layer)
sample.addLayer(substrate_layer)
return sample
def get_simulation(sample):
beam = ba.Beam(1e9, 0.1*nm, 0.2*deg)
n = 200
detector = ba.SphericalDetector(n, -2*deg, 2*deg, n, 0, 2*deg)
simulation = ba.ScatteringSimulation(beam, sample, detector)
return simulation
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()
|
BornAgain
≻ git-develop
≻ Documentation ≻ Examples ≻ GISAS ≻ Magnetic scattering ≻ Magnetic cylinders unpol
