pHeniX Cryostat


In collaboration with Oxford Cryosystems we co-developed the pHeniX cryostat which allows powder samples to be routinely measured down to 12 K.  The design of the cyrostat means that sample loading is extremely easy and rapid.  Temperature control is achieved via cryopad software running on a PC and base temperature is achieved in as little as 40 minutes.  The design of the rotating seals is such that theta-2theta scans can be performed to high angle with minimal stress on the high pressure hoses.  See the movies below to see the pHeniX in action!

Click below to download .mpg images of the phenix "in action" - warning approx 700 Kb each!

View One (whole d8 cabinet)
View Two (zoomed in)

ZrW2O8 Cell Parameter as a Function of Temperature

The coefficient of thermal expansion of this material derived from the PheniX data is -9.5 x 10-6 K-1 between 20 and 294 K, identical to that derived from the best available neutron diffraction data over the same temperature range.

The total experimental time used for this experiment was 48 hours.

Back to lab xray equipment

[Modified 10-Apr-2021 by John S.O. Evans. Pages checked for Google Chrome.]