1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
|
#!/usr/bin/env python3
"""
Basic GISAS from oriented boxes, with different detector resolutions.
"""
import bornagain as ba
from bornagain import ba_plot as bp, deg, nm
def get_sample():
"""
Dilute random assembly of oriented boxes 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)
ff = ba.Box(30*nm, 30*nm, 30*nm)
particle = ba.Particle(particle_mat, ff)
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
if __name__ == '__main__':
sample = get_sample()
# Beam
wavelength = 0.1*nm
alpha_i = 0.2*deg
beam = ba.Beam(1, wavelength, alpha_i)
# Detector
nx = 142
ny = 200
detector = ba.SphericalDetector(nx, -1.5*deg, 1.5*deg, ny, 0, 3*deg)
results = []
simulation = ba.ScatteringSimulation(beam, sample, detector)
simulation.options().setUseAvgMaterials(False)
result = simulation.simulate()
result.setTitle("no resolution")
results.append(result)
detector.setResolutionFunction(
ba.ResolutionFunction2DGaussian(0.2*deg, 0.01*deg))
simulation = ba.ScatteringSimulation(beam, sample, detector)
simulation.options().setUseAvgMaterials(False)
result = simulation.simulate()
result.setTitle("resolution 0.2deg, 0.01deg")
results.append(result)
detector.setResolutionFunction(
ba.ResolutionFunction2DGaussian(0.2*deg, 0.2*deg))
simulation = ba.ScatteringSimulation(beam, sample, detector)
simulation.options().setUseAvgMaterials(False)
result = simulation.simulate()
result.setTitle("resolution 0.2deg, 0.2deg")
results.append(result)
ba.showSample3D(sample, sample_size=120*nm, seed=0)
bp.plot2d_to_row(results, unit_aspect=1)
bp.plt.show()
|
