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1
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"""
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2
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Cylinder formfactor in Born approximation
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3
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"""
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4
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import bornagain as ba
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5
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from bornagain import deg, angstrom, nm
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6
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|
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7
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8
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def get_sample_script1():
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9
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"""
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10
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Returns a sample with cylinders in a homogeneous environment ("air"),
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11
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implying a simulation in plain Born approximation.
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|
12
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"""
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|
13
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|
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14
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m_ambience = ba.HomogeneousMaterial("Air", 0.0, 0.0)
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15
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m_particle = ba.HomogeneousMaterial("Particle", 6e-4, 2e-8)
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16
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|
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17
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18
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cylinder_ff = ba.FormFactorCylinder(5*nm, 5*nm)
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19
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cylinder = ba.Particle(m_particle, cylinder_ff)
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20
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particle_layout = ba.ParticleLayout()
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21
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particle_layout.addParticle(cylinder, 1.0)
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22
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23
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air_layer = ba.Layer(m_ambience)
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24
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air_layer.addLayout(particle_layout)
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25
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26
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multi_layer = ba.MultiLayer()
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27
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multi_layer.addLayer(air_layer)
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|
28
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return multi_layer
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|
29
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|
|
30
|
|
|
31
|
def get_simulation():
|
|
32
|
"""
|
|
33
|
Returns a GISAXS simulation with beam and detector defined
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|
34
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"""
|
|
35
|
simulation = ba.GISASSimulation()
|
|
36
|
simulation.setDetectorParameters(200, -2.0*deg, 2.0*deg,
|
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37
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200, 0.0*deg, 2.0*deg)
|
|
38
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simulation.setBeamParameters(1.0*angstrom, 0.2*deg, 0.0*deg)
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|
39
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return simulation
|
|
40
|
|
|
41
|
|
|
42
|
def run_simulation():
|
|
43
|
"""
|
|
44
|
Runs simulation and returns intensity map.
|
|
45
|
"""
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|
46
|
simulation = get_simulation()
|
|
47
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simulation.setSample(get_sample())
|
|
48
|
simulation.runSimulation()
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|
49
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return simulation.result()
|
|
50
|
|
|
51
|
|
|
52
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if __name__ == '__main__':
|
|
53
|
result = run_simulation()
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|
54
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ba.plot_simulation_result(result)
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