SAHA INSTITUTE OF NUCLEAR PHYSICS
Department of Atomic Energy, Govt. of India
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Powder Diffraction at High Temperature

For performing high temperature experiments, one can use the DHS 1100 heat cell (Anton Paar GmbH, Austria) mounted on the four-circle (first) goniometer. Thin film, powder and solid samples can be used for experiments over a temperature range of 25 �E1100 C in different environments. The special, dome-shaped graphite X-ray window of the DHS 1100 sample stage combines two important properties: gas-tight enclosure of the sample and X-ray transparency over the complete half space above the sample. Because of the gas tightness, samples can be investigated in air, vacuum or inert gas to avoid oxidation or other chemical reactions of the sample at high temperatures. One can use either point detectors (cyberstar) or 2D Pilatus detector for data collection and perform X-ray diffraction, X-ray reflectivity or X-ray scattering experiments at high temperatures. It is important that the samples are NOT heated to temperatures close to the melting point as otherwise the heat cell will be damaged. Sample diameters up to 25 mm and thickness up to 2 mm are suitable for experiments. 

Temperature range: 
With Air, N2, vacuum or inert gas = 25 to 1100 deg C 
With Helium                              = 25 to 1000 deg C

High temperature cell mounted on the 4 circle 
goniometer with the graphite dome
High temperature cell without the graphite dome 
where the sample is mounted on the Aluminium 
Nitride (AlN) ceramic base plate
Closer view of sample, mounted on the AlN ceramic 
base plate and held by the Inconel springs

Anton Paar temperature controller

 

 

Last Updated on Friday, 11 April 2014 19:18
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