11.2 The SasView_adsorbed_layer McXtrace Component
SasView adsorbed_layer model component as sample description.
Identification
Description
SasView_adsorbed_layer component, generated from adsorbed_layer.c in sasmodels.
Example: SasView_adsorbed_layer(second_moment, adsorbed_amount, density_shell,
radius, volfraction, sld_shell, sld_solvent, model_scale=1.0, model_abs=0.0, xwidth=0.01,
yheight=0.01, zdepth=0.005, R=0, int target_index=1, target_x=0, target_y=0,
target_z=1, focus_xw=0.5, focus_yh=0.5, focus_aw=0, focus_ah=0, focus_r=0,
pd_radius=0.0)
Input parameters
Parameters in boldface are required; the others are optional.
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Name |
Unit |
Description |
Default |
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second_moment |
Å |
([0.0, inf]) Second moment of polymer
distribution. |
23.0 |
|
adsorbed_amount |
mg/m\(^{2}\) |
([0.0, inf]) Adsorbed amount of polymer. |
1.9 |
|
density_shell |
g/cm\(^{3}\) |
([0.0, inf]) Bulk density of polymer in the
shell. |
0.7 |
|
radius |
Å |
([0.0, inf]) Core particle radius. |
500.0 |
|
volfraction |
None |
([0.0, inf]) Core particle volume fraction. |
0.14 |
|
sld_shell |
1e-6/Å\(^{2}\) |
([-inf, inf]) Polymer shell SLD. |
1.5 |
|
sld_solvent |
1e-6/Å\(^{2}\) |
([-inf, inf]) Solvent SLD. Optional
parameters: |
6.3 |
|
model_scale |
|
Global scale factor for scattering kernel.
For systems without inter-particle
interference, the form factors can be
related to the scattering intensity by the
particle volume fraction. |
1.0 |
|
model_abs |
|
Absorption cross section density at 2200
m/s. |
0.0 |
|
xwidth |
m |
([-inf, inf]) Horiz. dimension of sample,
as a width. |
0.01 |
|
yheight |
m |
([-inf, inf]) vert . dimension of sample, as
a height for cylinder/box |
0.01 |
|
zdepth |
m |
([-inf, inf]) depth of sample |
0.005 |
|
R |
m |
Outer radius of sample in (x,z) plane for
cylinder/sphere. |
0 |
|
target_x |
m |
relative focus target position. |
0 |
|
target_y |
m |
relative focus target position. |
0 |
|
target_z |
m |
relative focus target position. |
1 |
|
target_index |
|
Relative index of component to focus at,
e.g. next is +1. |
1 |
|
focus_xw |
m |
horiz. dimension of a rectangular area. |
0.5 |
|
focus_yh |
m |
, vert. dimension of a rectangular area. |
0.5 |
|
focus_aw |
deg |
, horiz. angular dimension of a
rectangular area. |
0 |
|
focus_ah |
deg |
, vert. angular dimension of a rectangular
area. |
0 |
|
focus_r |
m |
case of circular focusing, focusing radius. |
0 |
|
pd_radius |
|
(0,inf) defined as (dx/x), where x is de
mean value and dx the standard devition
of the variable |
0.0 |
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