[ Identification | Description | Input parameters | Links ]

The ESRF_ID01 Instrument

Nano-diffraction imaging beamline at ESRF, Grenoble

Identification

Description

This model of ID01 is designed specifically to conduct virtual scanning nano-diffraction imaging
experiments such as the one demonstrated Chahine et al., J. Appl. Cryst 47, 762-769. The model
includes beam-defining slits, a double Si111-monochromator, a Fresnel Zone Plate, a polycrystalline
sample designed specifically for this type of virtual experiments, and a detector set up mimicking the
set up at the actual beam-line. The nanodiffraction experiment is performed by locating a suitable peak
in the diffraction of the crystal (using the variables NominalEnergy, Delta, and Eta)
and then scan across the sample (using the variables Pix and ySamplePosition). By plotting
e.g. total detector intensity as a function of position, one can map out impurities in the sample by
their scattering properties.

Input parameters

Parameters in boldface are required; the others are optional.
NameUnitDescriptionDefault
DistanceSampleToDetectormDistance from sample to detector0.5
NominalEnergykeVNominal energy of photons after monochromation8.0
DeltadegAngle rotating the detector around the sample in the yz-plane0.0
NudegHorizontal plane rotation angle of the detector (for asymmetric peaks)0.0
EtadegAngle between the incoming beam and the sample normal in the yz-plane0.0
PhidegHorizontal plane rotation angle of the sample (for asymmetric peaks)0.0
PixumHorizontal offset of sample0.0
PiyumVertical offset of sample0.0
SampleMosaicitymoaMosaicity of the sample crystal lattice1.0
SampleDeltadoverd0.001

Links


[ Identification | Description | Input parameters | Links ]

Generated on 2024-07-01 09:47:49