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.	""
R	AA	Radius of scattering hard spheres	100
Phi	1	Particle volume fraction	1e-3
Delta_rho	fm/AA^3	Excess scattering length density	0.6
xwidth	m	horiz. dimension of sample, as a width	0
yheight	m	vert . dimension of sample, as a height for cylinder/box	0
zdepth	m	depth of sample	0
radius	m	Outer radius of sample in (x,z) plane for cylinder/sphere	0
target_x	m		0
target_y	m	position of target to focus at	0
target_z	m		6
target_index	1	Relative index of component to focus at, e.g. next is +1	0
focus_xw	m	horiz. dimension of a rectangular area	0
focus_yh	m	vert. dimension of a rectangular area	0
focus_aw	deg	horiz. angular dimension of a rectangular area	0
focus_ah	deg	vert. angular dimension of a rectangular area	0
focus_r	m	Detector (disk-shaped) radius	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