[ Identification | Description | Input parameters | Links ]

The Powder1 Component

General powder sample with a single scattering vector.

Identification

Description

General powder sample with a single scattering vector. No multiple ,
scattering, no incoherent scattering, no secondary extinction.
The shape of the sample may be a cylinder of given radius or a box with
dimensions xwidth, yheight, zdepth.
The efficient is highly improved when restricting the vertical scattering
range on the Debye-Scherrer cone (with 'd_phi').
You may use PowderN to use N scattering lines defined in a file.

Example: Powder1(radius=0.015,yheight=0.05,q =1.8049,d_phi=0.07,pack=1,
j=6,DW=1,F2=56.8,Vc=85.0054,sigma_abs=0.463)

Input parameters

Parameters in boldface are required; the others are optional.
NameUnitDescriptionDefault
radiusmRadius of sample in (x,z) plane0.01
yheightmHeight of sample y direction0.05
xwidthmhoriz. dimension of sample, as a width0
zdepthmdepth of box sample0
qScattering vector of reflection [AA^-1]1.8049
dAAd-spacing for sample, overrides 'q'0
d_phideg,0-180Angle corresponding to the vertical angular range to focus to, e.g. detector height. 0 for no focusing0
pack1Packing factor1
j1Multiplicity of reflection6
DW1Debye-Waller factor of reflection1
F2barnsStructure factor of reflection56.8
VcAA^3Volume of unit cell85.0054
sigma_absbarnsAbsorption cross section per unit cell at 2200 m/s0.463
AT ( , , ) RELATIVE
ROTATED ( , , ) RELATIVE

Links


[ Identification | Description | Input parameters | Links ]

Generated on 2023-09-19 20:01:36