XtaLAB mini accessory

XtaLAB mini™ accessories

Oxford Cryostream 800

Whether 800 series, Plus or Compact, all Cryostream systems have the same unique mode of operation, allowing the systems to offer fast cool-down, high stability, low LN2 consumption and superior laminar flow. The new quiet pump is responsible for the gas flow from an unpressurised Dewar, through a flexible vacuum insulated transfer line, into the Cryostream coldhead. Once inside the coldhead, the liquid nitrogen passes through a heater, which evaporates most of the liquid into gas. This gas then flows outward along one path of the heat exchanger, through the temperature controller, to arrive at the pump at approximately 10 Kelvin below room temperature.

The flow rate of the gas from the pump is regulated by a variable flow controller. This gas flows back into the Cryostream coldhead where it is re-cooled along the second path of the heat exchanger.The gas temperature is regulated by a heater and sensor before entering the nozzle of the Cryostream, flowing along the isothermal nozzle and out over the sample.The temperature indicated on the Controller is a mapped temperature for the crystal position.

The default Cryostream gas flow rate is 5 L /minute, which equates to roughly 0.6 L of liquid nitrogen per hour.This means that a 60 litre Dewar will last for up to 4 days so can easily be run over a weekend without refilling. Turbo mode gives an increased flow rate of 10 L/minute if required.

Cryostream features
  • Best available temperature range of 80- 400 Kelvin as standard or 80-500 Kelvin in Plus model
  • Oxford Cryosystems superior laminar gas flow system; means significantly less icing than alternative systems
  • Proven stability in excess of 0.1 Kelvin
  • On-line and local data logging, monitoring and control
  • Fast cool-down to 100 Kelvin in just 20 minutes
  • Low & constant LN2 consumption means a 60 litre dewar can last up to 4 days*
  • Highly accurate mapping of temperature at crystal position
  • *At temperatures greater than 90 Kelvin, LN2 consumption may increase to 1.2 L/hour