Environments for Powder Diffraction

1. How do I achieve LOW temperature?
An Oxford Cryosystems Cryostream Plus can be used in conjunction with capillary-mounted samples to achieve temperatures between 80 - 500 K.

2. Is there a cryostat available?
A He-flow cryostat capable of achieving temperatures between 4 - 300 K is under development.

3. How do I achieve HIGH temperature?
A Cyberstar hot-air blower can be used in conjunction with capillary-mounted samples to achieve temperatures between 350 - 1270 K.

An Anton Paar furnace (Figure 1a) can be used to heat flat plate samples to 1870 K, using a Pt filament (Figure 1b).

   Figure 1a. Anton Paar furnace
Figure 1b. Anton Paar platinum filament, with cavity

 

4. Is it possible to do high-pressure experiments?
We are in the process of commissioning high-pressure (greater than 1 GPa) apparatus on the beamline.  It is hoped that users will be able to use our membrane diamond anvil cells in conjunction with high-temperature (to 1200 K) and low temperature (to 4 K) environments.  Please contact the beamline staff if you are interested in using this apparatus in future. 

5. Is there a flow cell available?
A flow cell is now available; it may be used to either evacuate a capillary or flow gas(es) through a capillary during data acquisition.  The flow cell is shown in Figure 2 and the gas manifold is shown in Figure 3.


Figure 2. Flow cell for powder diffraction measurements

Figure 3. Gas mixing and evacuation manifold