Low Temperature Effusion Cell EF 40LT1

Low Temperature Effusion Cell EF 40LT1

Technical data

Mounting flange DN 40CF (rotatable) 
Heater W wire (tungsten)
Temperature range 100 °C - 1000 °C
Temperature stability ± 0.1°C 
Crucible type (option) PBN, Al2O3, Quartz (other materials on request)
Crucibles volume 5cc (other volumes on request)
Evaporated materials High vapor pressure and organic materials (e.g. As, Sb, Ba, Bi, K, Li, Mg, Ca, CdSe)
Thermocouple type type K
Degassing temp. 1100 °C
Water cooling (required) water flow: > 0.5 l/min, temperature: 15 - 30 °C, max pressure: 6 bar
Insertion length min. 115 mm (other on request) OD: 35 mm
Spot size Dependent on working distance
Working distance 100 - 150 mm
Bakeout temperature up to 250 °C
Working pressure < 10-5 mbar

EF 40LT1 Low Temperature Effusion Cell (Knudsen Cell) is designed for highly constant evaporation rates in lower ranges of temperature.

Custom insertion length min. 325 mm (other on request).


  • Evaporation temperature range: 100 °C - 1000 °C
  • Extremely stable flux rates
  • Various crucible materials
  • Highly reproducible & reliable
  • Suitable for use in any MBE system
  • Mo free construction (allows high outgassing temperatures)
  • Integral water cooling
  • Thermocouple type K


  • Customised insertion length
  • With or without integrated manual/electro-pneumatic shutter
  • Linear shift
  • Crucibles

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