The `Saxs_spheres` Component

Sample for Small Angle X-ray Scattering - hard spheres in thin solution, mono disperse.

Identification

Site:
Author: E. B. Knudsen, P. Willendrup, K. Lefmann, L. Arleth
Origin: DTU Fysik
Date: 28.10.2010

Description

Sample for use in a SAXS instrument, models hard, monodisperse spheres in thin solution.
The shape of the sample may be a filled box with dimensions
xwidth, yheight, zdepth, a cylinder with dimensions radius and yheight,
a filled sphere with radius R.

Example: Saxs_spheres(R = 20, Phi = 1e-3, Delta_rho = 0.6, sigma_abs = 50, xwidth=0.01, yheight=0.01, zdepth=0.005)

Input parameters

Parameters in boldface are required; the others are optional.

Name	Unit	Description	Default
sphere_mtrl		Material datafile from which to find absorption. If none is given absorption is neglected.	NULL
R		Radius of scattering hard spheres (AA)	100
Phi		Particle volume fraction (1)	1e-3
Delta_rho		Excess scattering length density (fm/AA^3)	0.6
xwidth		horiz. dimension of sample, as a width (m)	0
yheight		vert . dimension of sample, as a height for cylinder/box (m)	0
zdepth		depth of sample (m)	0
radius		Outer radius of sample in (x,z) plane for cylinder/sphere [m]	0
target_x			0
target_y		position of target to focus at [m]	0
target_z			6
target_index		Relative index of component to focus at, e.g. next is +1 [1]	0
focus_xw		horiz. dimension of a rectangular area [m]	0
focus_yh		vert. dimension of a rectangular area [m]	0
focus_aw		horiz. angular dimension of a rectangular area [deg]	0
focus_ah		vert. angular dimension of a rectangular area [deg]	0
focus_r		Detector (disk-shaped) radius (m)	0
mu_c	5	Column of the datafile which contains absorption coefficients.	0

AT (	,	,		) RELATIVE
ROTATED (	,	,		) RELATIVE

McXtrace - An X-ray ray-trace simulation package

The Saxs_spheres Component

Identification

Description

Input parameters

Links

The `Saxs_spheres` Component