Effusion Cell EF 40C1

Effusion Cell EF 40C1

Technical data

Mounting flange DN 40CF (rotatable) 
Heater W wire (tungsten)
Temperature range EF 1200 °C  (~250 °C - 1200 °C)
EF 1500 °C  (~250 °C - 1500 °C,
                    1600 °C for degas)
Temperature stability ± 0.1°C 
Crucible type (option) PBN, Al2O3, Quartz (other materials on request)
Crucibles volume 5cc
Evaporated materials All typical materials according to crucible type
Thermocouple type EF 1200 °C  - type K
EF 1500 °C  - type C
Degassing temp. 1600 °C
Water cooling (required) water flow: > 0.5 l/min, temperature: 20 - 30 °C, max pressure: 6 bar
Insertion length min. 114mm (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 40C1 Effusion Cell (Knudsen Cell) is a source designed for delivering highly constant evaporation rates by indirect resistive heating at the material.

Custom insertion length 114 - 380 mm (other on request).


  • 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


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

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