Component Manual for the Neutron Ray-Tracing Package McStas, version 3.8.6

14.85  The SANSSpheresPolydisperse McStas Component

A sample of mono- or polydisperse spherical particles in solution.

Identification

Description

A simple component simulating the scattering from a box-shaped, thin solution of monodisperse, spherical particles.

Input parameters

Parameters in boldface are required; the others are optional.

Name

Unit

Description

Default

R

Å

Radius of the spherical particles.

100.0

dR

Å

Variance of the radius of spherical particles. Default 0 (monodisperse spheres)

0.0

Concentration

mM

Concentration of sample.

0.01

DeltaRho

cm/Å\(^{3}\)

Excess scattering length density of the

1.0e-14

AbsorptionCrosssection

1/m

Absorption cross section of the sample.

0.0

xwidth

m

Dimension of component in the x-direction.

yheight

m

Dimension of component in the y-direction.

zdepth

m

Dimension of component in the z-direction.

SampleToDetectorDistance

m

Distance from sample to detector (for

DetectorRadius

m

Radius of the detector (for focusing the

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