[ Identification | Description | Input parameters | Output parameters | Links ]

The templateDIFF Instrument

Simple monochromator Diffractometer for powders

Identification

Description

A template powder diffractometer used as a tutorial at LLB.
Default geometry is from D20@ILL.

Usual values for monochromator d-spacing
PG       002 DM=3.355 AA (Highly Oriented Pyrolythic Graphite)
PG       004 DM=1.607 AA
Heusler  111 DM=3.362 AA (Cu2MnAl)
CoFe         DM=1.771 AA (Co0.92Fe0.08)
Ge       111 DM=3.266 AA
Ge       311 DM=1.714 AA
Ge       511 DM=1.089 AA
Ge       533 DM=0.863 AA
Si       111 DM=3.135 AA
Cu       111 DM=2.087 AA
Cu       002 DM=1.807 AA
Cu       220 DM=1.278 AA

Example: mcrun templateDIFF.instr lambda=1 RV=-1

Input parameters

Parameters in boldface are required; the others are optional.
Name Unit Description Default
lambda Angs Wavelength at monochromator 1
DM Angs d-spacing of monochromator 3.355
Powder str File name for powder description "Al2O3_sapphire.laz"
RV m Monochromator vertical curvature, 0 for flat, -1 for automatic setting 0
L1 m Source-Monochromator distance 17
L2 m Monochromator-Sample distance 3.2
L3 m Sample-Detector distance 1.471
verbose 1 Print DIF configuration. 0 to be quiet 1

Links


[ Identification | Description | Input parameters | Output parameters | Links ]

Generated automatically by McDoc, Peter Willendrup <peter.willendrup@risoe.dk> / Thu Mar 15 18:49:41 2012