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

14.76  The SANSLiposomes McStas Component

A sample of polydisperse liposomes in solution (water).

Identification

Description

A component simulating the scattering from a box-shaped, thin solution (water) of liposomes described by a pentuple-shell model.

Input parameters

Parameters in boldface are required; the others are optional.

Name

Unit

Description

Default

Radius

Å

Average thickness of the liposomes.

800.0

Thickness

Å

Thickness of the bilayer.

38.89

SigmaRadius

Relative Gaussian deviation of the radius in the distribution of liposomes.

0.20

VolumeOfHeadgroup

Å\(^{3}\)

Volume of one lipid headgroup - default is POPC.

319.0

VolumeOfCH2Tail

Å\(^{3}\)

Volume of the CH2-chains of one lipid - default is POPC.

818.8

VolumeOfCH3Tail

Å\(^{3}\)

Volume of the CH3-tails of one lipid - default is POPC.

108.6

ScatteringLengthOfHeadgroup

cm

Scattering length of one lipid headgroup - default is POPC in D2O.

7.05E-12

ScatteringLengthOfCH2Tail

cm

Scattering length of the CH2-chains of one lipid - default is POPC in D2O.

-1.76E-12

ScatteringLengthOfCH3Tail

cm

Scattering length of the CH3-tails of one lipid - default is POPC in D2O.

-9.15E-13

Concentration

mM

Concentration of sample.

0.01

RhoSolvent

cm/Å\(^{3}\)

Scattering length density of solvent - default is D2O.

6.4e-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 focusing the scattered neutrons).

DetectorRadius

m

Radius of the detector (for focusing the scattered neutrons).

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