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McStas: SasView_fractal_core_shell

[ Identification | Description | Input parameters | Links ]

The SasView_fractal_core_shell Component

SasView fractal_core_shell model component as sample description.

Identification

  • Site:
  • Author: Jose Robledo
  • Origin: FZJ / DTU / ESS DMSC
  • Date:

Description

SasView_fractal_core_shell component, generated from fractal_core_shell.c in sasmodels.

Example:
SasView_fractal_core_shell(radius, thickness, sld_core, sld_shell, sld_solvent, volfraction, fractal_dim, cor_length,
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, pd_thickness=0.0, pd_cor_length=0.0)

Input parameters

Parameters in boldface are required; the others are optional.
NameUnitDescriptionDefault
radiusAng([0.0, inf]) Sphere core radius.60.0
thicknessAng([0.0, inf]) Sphere shell thickness.10.0
sld_core1e-6/Ang^2([-inf, inf]) Sphere core scattering length density.1.0
sld_shell1e-6/Ang^2([-inf, inf]) Sphere shell scattering length density.2.0
sld_solvent1e-6/Ang^2([-inf, inf]) Solvent scattering length density.3.0
volfraction([0.0, inf]) Volume fraction of building block spheres.0.05
fractal_dim([0.0, 6.0]) Fractal dimension.2.0
cor_lengthAng([0.0, inf]) Correlation length of fractal-like aggregates.100.0
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
xwidthm([-inf, inf]) Horiz. dimension of sample, as a width.0.01
yheightm([-inf, inf]) vert . dimension of sample, as a height for cylinder/box0.01
zdepthm([-inf, inf]) depth of sample0.005
RmOuter radius of sample in (x,z) plane for cylinder/sphere.0
target_xmrelative focus target position.0
target_ymrelative focus target position.0
target_zmrelative focus target position.1
target_index Relative index of component to focus at, e.g. next is +1.1
focus_xwmhoriz. dimension of a rectangular area.0.5
focus_yhm, vert. dimension of a rectangular area.0.5
focus_awdeg, horiz. angular dimension of a rectangular area.0
focus_ahdeg, vert. angular dimension of a rectangular area.0
focus_rmcase 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
pd_thickness(0,inf) defined as (dx/x), where x is de mean value and dx the standard devition of the variable.0.0
pd_cor_length(0,inf) defined as (dx/x), where x is de mean value and dx the standard devition of the variable0.0
AT ( , , ) RELATIVE
ROTATED ( , , ) RELATIVE

Links


[ Identification | Description | Input parameters | Links ]

Generated on 2023-09-19 20:01:36


Last Modified: Wednesday, 03-Jan-2024 19:59:10 CET
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