McXtrace - An X-ray ray-trace simulation package

Name

Unit

Description

Default

sld_lg

1e-6/Å\(^{2}\)

([-inf, inf]) large particle scattering length density.

-0.4

sld_sm

1e-6/Å\(^{2}\)

([-inf, inf]) small particle scattering length density.

3.5

sld_solvent

1e-6/Å\(^{2}\)

([-inf, inf]) solvent scattering length density.

6.36

volfraction_lg

([-inf, inf]) volume fraction of large spheres.

0.05

volfraction_sm

([-inf, inf]) volume fraction of small spheres.

0.005

surface_fraction

([-inf, inf]) fraction of small spheres at surface.

0.4

radius_lg

Å

([0, inf]) radius of large spheres.

5000

radius_sm

Å

([0, inf]) radius of small spheres.

100

penetration

Å

([-1, 1]) fractional penetration depth of small spheres into large sphere. Optional parameters:

0

model_scale

Global scale factor for scattering kernel. For systems without inter-particle interference, the form factors can be related to the scattering intensity by the particle volume fraction.

1.0

model_abs

Absorption cross section density at 2200 m/s.

0.0

xwidth

m

([-inf, inf]) Horiz. dimension of sample, as a width.

0.01

yheight

m

([-inf, inf]) vert . dimension of sample, as a height for cylinder/box

0.01

zdepth

m

([-inf, inf]) depth of sample

0.005

R

m

Outer radius of sample in (x,z) plane for cylinder/sphere.

0

target_x

m

relative focus target position.

0

target_y

m

relative focus target position.

0

target_z

m

relative focus target position.

1

target_index

Relative index of component to focus at, e.g. next is +1.

1

focus_xw

m

horiz. dimension of a rectangular area.

0.5

focus_yh

m

, vert. dimension of a rectangular area.

0.5

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

case of circular focusing, focusing radius.

0

pd_radius_lg

(0,inf) defined as (dx/x), where x is de mean value and dx the standard devition of the variable.

0.0

pd_radius_sm

(0,inf) defined as (dx/x), where x is de mean value and dx the standard devition of the variable

0.0