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McStas: SasView_hayter_msa

[ Identification | Description | Input parameters | Links ]

The SasView_hayter_msa Component

SasView hayter_msa model component as sample description.

Identification

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

Description

SasView_hayter_msa component, generated from hayter_msa.c in sasmodels.

Example:
SasView_hayter_msa(radius_effective, volfraction, charge, temperature, concentration_salt, dielectconst,
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_effective=0.0, pd_charge=0.0)

Input parameters

Parameters in boldface are required; the others are optional.
NameUnitDescriptionDefault
radius_effectiveAng([0, inf]) effective radius of charged sphere.20.75
volfractionNone([0, 0.74]) volume fraction of spheres.0.0192
chargee([1e-06, 200]) charge on sphere (in electrons).19.0
temperatureK([0, 450]) temperature, in Kelvin, for Debye length calculation.318.16
concentration_saltM([0, inf]) conc of salt, moles/litre, 1:1 electolyte, for Debye length.0.0
dielectconstNone([-inf, inf]) dielectric constant (relative permittivity) of solvent, kappa, default water, for Debye length.71.08
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_effective(0,inf) defined as (dx/x), where x is de mean value and dx the standard devition of the variable.0.0
pd_charge(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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