Name

Unit

Description

Default

porod_scale

([-inf, inf]) Power law scale factor.

1e-05

porod_exp

([-inf, inf]) Exponent of power law.

3.0

peak_scale

([-inf, inf]) Scale factor for broad peak.

10.0

correlation_length

Å

([-inf, inf]) screening length.

50.0

peak_pos

1/Å

([-inf, inf]) Peak position in q.

0.1

width_exp

([-inf, inf]) Exponent of peak width.

2.0

shape_exp

([-inf, inf]) Exponent of peak shape.

1.0

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_correlation_length

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

0.0