[ Identification | Description | Input parameters | Output parameters | Links ]
ILL_D9
InstrumentThe hot neutron four-circle diffractometer D9 at the ILL. For structural analysis beyond the determination of average atomic positions, high resolution nuclear density maps are required. D9 is ideally suited for this purpose. Because of the short wavelength very small atomic displacements can be identified, accurate to typically 0.001 Å. A two-dimensional multidetector is employed. This simulation uses a quartz single crystal sample. NOTE: as no transmission monochromator component is presently available, this simulation uses a monochromator in reflection, the width of which is automatically adjusted so that the outcoming beam has the same width as that of a 6.5 cm wide transmission monochromator at the same take-off angle example (single image on detector): mcrun D9_instr -n 1e8 Lambda=0.65 TwoTheta=60 Nu=15 delta_Omega=0 example (peak scan): mcrun D9_instr -n 1e7 Lambda=0.65 TwoTheta=60 Nu=0 delta_Omega=-1.8,1.8 -N 31 -d Scan_0.65_60_0
Name | Unit | Description | Default |
---|---|---|---|
Lambda | Angstrom | wavelength | 0.65 |
TwoTheta | degree | 2-Theta of sample reflection | 60 |
Nu | degree | lifting-arm angle | 15 |
delta_Omega | degree | start,end of omega scan | 0 |
ILL_D9.instr
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[ Identification | Description | Input parameters | Output parameters | Links ]
Generated automatically by McDoc, Peter Willendrup <peter.willendrup@risoe.dk> / Feb 28 2006