[ Identification | Description | Input parameters | Links ]

The Sans_liposomes_new Component

Release: McStas 1.12 SANS sample, spherical shells in thin solution with gaussian size distribution

Identification

• Site:
• Author: P. Willendrup, K. Lefmann, L. Arleth, L. Udby
• Origin: Risoe
• Date: 19.12.2003

Description

Sample for Small Angle Neutron Scattering - spherical shells in thin solution with gaussian size distribution
The shape of the sample may be a cylinder of given radius or a box with dimensions
xwidth, yheight, zthick. qmax defines a cutoff in q.

Example: Sans_spheres(R = 100, dR = 5, dbilayer=35, Phi = 1e-3, Delta_rho = 0.6, sigma_a = 50, qmax = 0.3 ,xwidth=0.01, yheight=0.01, zthick=0.005)

%BUGS
This component does NOT simulate absolute intensities. This latter depends on the detector parameters.

Input parameters

Parameters in boldface are required; the others are optional.

Name	Unit	Description	Default
R	AA	Radius of scattering hard spheres	100
dR			0.0
Phi	1	Particle volume fraction	1e-3
Delta_rho	fm/AA^3	Excess scattering length density	0.6
sigma_a	m^-1	Absorption cross section density at 2200 m/s	0.50
dist	m	Distance from sample to detector	6
Rdet	m	Detector (disk-shaped) radius	0.5
xwidth	m	horiz. dimension of sample, as a width	0.01
yheight	m	vert . dimension of sample, as a height	0.01
zthick	m	thickness of sample	0.005
qmax	AA^-1	Maximum momentum transfer	0
dbilayer	AA	Thickness of shell	35

AT (	,	,		) RELATIVE		Generate to clipboard
ROTATED (	,	,		) RELATIVE

Links

• Source code for Sans_liposomes_new.comp.
• The test/example instrument SANS.instr.

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[ Identification | Description | Input parameters | Links ]

Generated on mcstas 3.6.1

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Last Modified: Friday, 12-Dec-2025 12:58:06 CET