OrientExpress
Test Laue neutron-diffractometer
Guide hall 1, End of the thermal neutron guide H23 |
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Diffraction geometry |
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Transmission or backscattering |
Neutron beam | |
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Flux at sample position | about 107 n/cm2/s |
Wavelength range | 0.8 - 3.2 Å |
Detector (1) | |
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(1) Photonics Science Limited, Robertsbridge, East Sussex, TN32 3LA, United Kingdom. | |
2 CCD cameras | High performance thermoelectrically cooled image intensified CCD cameras |
Scintillator | AST type ND blue, based upon 6Li with added ZnS:Ag Distance to sample: 35 mm to 195 mm |
Geometry | from transmission (γ=0º) to back scattering (γ=180º), preferred γ angles: 0º, 90º, 180º Beam divergence : about h= 0.6º, v= 0.8º |
Coupling between both | Via a tapered fibre-optic, bonded directly onto the CCD, to give maximum transmission and high sensitivity |
Tools |
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Video system for crystal positioning |
Data analysis |
Softwares OrientExpress (indexation), Clip (indexation), or Esmeralda (indexation and integration) |
OrientExpress - Characteristics
Ref.: "OrientExpress: A new system for Laue neutron diffraction ", Ouladdiaf B. , Archer J. , McIntyre G.J. , Hewat A.W. , Brau D. , York S., Physica B 385-386, 1052-1054 (2006).