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#!/usr/bin/env python3
"""
Core shell nanoparticles.
Alternative implementation using particle composition
"""
import bornagain as ba
from bornagain import ba_plot as bp, deg, nm, std_samples, R3
def get_sample():
"""
A sample with box-shaped core-shell particles.
"""
# Materials
material_Diff = ba.RefractiveMaterial("Core", -4e-5, 0)
material_Shell = ba.RefractiveMaterial("Shell", 1e-4, 2e-8)
# Form factors
ff_1 = ba.Box(12*nm, 12*nm, 7*nm)
ff_2 = ba.Box(16*nm, 16*nm, 8*nm)
# Particles
core = ba.Particle(material_Diff, ff_1)
shell = ba.Particle(material_Shell, ff_2)
particle = ba.Compound()
particle.addComponent(shell)
particle.addComponent(core, R3(0, 0, 0.5*nm))
return std_samples.sas_sample_with_particle(particle)
def get_simulation(sample):
beam = ba.Beam(1e9, 0.1*nm, 0.2*deg)
n = <%= test_mode ? 11 : 200 %>
detector = ba.SphericalDetector(n, 0., 2*deg, n, 0., 2*deg)
simulation = ba.ScatteringSimulation(beam, sample, detector)
return simulation
if __name__ == '__main__':
sample = get_sample()
simulation = get_simulation(sample)
result = simulation.simulate()
<%- if test_mode -%>
from bornagain import ba_check
ba_check.persistence_test(result)
<%- elsif figure_mode -%>
plotargs = bp.parse_commandline()
bp.plot_datafield(result, **plotargs)
bp.export(**plotargs)
<%- else -%>
bp.plot_datafield(result)
bp.plt.show()
<%- end -%>
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