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The SasView_olymer_icelle McXtrace Component

11.70  The SasView_polymer_micelle McXtrace Component

SasView polymer_micelle model component as sample description.

Identification

  • Author: Jose Robledo

  • Origin: FZJ / DTU / ESS DMSC

  • Date:

Description

SasView_polymer_micelle component, generated from polymer_micelle.c in sasmodels.

Example: SasView_polymer_micelle(ndensity, v_core, v_corona, sld_solvent, sld_core, sld_corona, radius_core, rg, d_penetration, n_aggreg, 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_core=0.0, pd_rg=0.0)

Input parameters

Parameters in boldface are required; the others are optional.

Name

Unit

Description

Default

ndensity

1e15/cm\(^{3}\)

([0.0, inf]) Number density of micelles.

8.94

v_core

Å\(^{3}\)

([0.0, inf]) Core volume .

62624.0

v_corona

Å\(^{3}\)

([0.0, inf]) Corona volume.

61940.0

sld_solvent

1e-6/Å\(^{2}\)

([0.0, inf]) Solvent scattering length density.

6.4

sld_core

1e-6/Å\(^{2}\)

([0.0, inf]) Core scattering length density.

0.34

sld_corona

1e-6/Å\(^{2}\)

([0.0, inf]) Corona scattering length density.

0.8

radius_core

Å

([0.0, inf]) Radius of core ( must be >> rg ).

45.0

rg

Å

([0.0, inf]) Radius of gyration of chains in corona.

20.0

d_penetration

([-inf, inf]) Factor to mimic non-penetration of Gaussian chains.

1.0

n_aggreg

([-inf, inf]) Aggregation number of the micelle. Optional parameters:

6.0

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_radius_core

(0,inf) defined as (dx/x), where x is de mean value and dx the standard devition of the variable.

0.0

pd_rg

(0,inf) defined as (dx/x), where x is de mean value and dx the standard devition of the variable

0.0

Links

  • Component source code found in file SasView_polymer_micelle.comp.


Last Modified: Monday, 02-Nov-2026 22:21:07 CET
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