Cryogen-Free Systems

In-Cavity & FlexLine Systems

Sources of liquid helium have become limited, expensive and delivery unreliable. Bruker now introduces two cryogen-free EPR variable temperature systems for both CW and Pulse EPR spectroscopy. These systems free the spectroscopist from the need to purchase liquid cryogens to attain the low temperatures required for many EPR experiments. Both cryostats utilize standard sample tubes and allow rapid sample interchange. One compressor and electronic controller can service both cryostats.

Features of both Systems

  • Requires no liquid helium
  • Reduces cost of low temperature experiments
  • Two base temperature options



Features of the FlexLine Systems

  • Negligible gaseous helium consumption
  • Optical access
  • Base temperature < 5.8 K or < 10 K
  • Fits in 56 mm air gap
  • Accommodates all FlexLine resonators

Features of the In-Cavity Systems

  • Gaseous helium used as heat transfer medium
  • < 1 hr to reach base temperature
  • Standard quartz insert dewar and sample holder
  • Base temperature < 4 K or < 10 K
  • Accommodates standard X-Band resonators
  • Low vibration factor means spectra are not affected
  • Rapid sample exchange
  • Variable temperature base to >150 K