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11.68 The SasView_poly_gauss_coil McXtrace Component
SasView poly_gauss_coil model component as sample description.
Identification
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Author: Jose Robledo
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Origin: FZJ / DTU / ESS DMSC
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Date:
Description
SasView_poly_gauss_coil component, generated from poly_gauss_coil.c in sasmodels.
Example: SasView_poly_gauss_coil(i_zero, rg, polydispersity, 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_rg=0.0)
Input parameters
Parameters in boldface are required; the others are optional.
|
Name |
Unit |
Description |
Default |
|
|
|||
|
i_zero |
1/cm |
([0.0, inf]) Intensity at q=0. |
70.0 |
|
rg |
Å |
([0.0, inf]) Radius of gyration. |
75.0 |
|
polydispersity |
None |
([1.0, inf]) Polymer Mw/Mn. Optional parameters: |
2.0 |
|
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_rg |
|
(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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Links
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Component source code found in file SasView_poly_gauss_coil.comp.
