Low Temperature Effusion Cell EF 40LT1

Low Temperature Effusion Cell EF 40LT1

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



Prevac are a world leader in the design and production of analytical and deposit scientific and research equipment. Their systems operate in a high and ultra high vacuum environment. They design and construct UHV and HV systems fully adapted to the individual requirements of research projects and industrial applications.

Key Features

  • 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


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

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


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

Service Support

Comprehensive repairs and servicing

Annual Support Programs

Your metrology instrumentation is a major investment that is critical to your business operation and success. In today’s competitive climate, it is more important than ever to extend the functionality and peak performance of your metrology equipment years beyond the expiration of your factory warranty. CN Tech’s Support Programs will help ensure that your investment is protected, and that you and your instrument’s are always operating at peak performance.

With over 20 years’ experience servicing and repairing you can be assured that your system is in safe hands. The independent services we offer include system relocation, maintenance visits, parts and consumables, and break down interventions.

CN Tech’s Support Programs are an economical way to guarantee optimal working condition:

  • Annual Preventive Maintenance
  • Priority Technical Assistance
  • Preferred Parts Availability
  • On-Site User Training
  • Remote Diagnostics
  • No surprise repair expense and much more!

Support Contact Example

An example of our service and support contracts are shown below:


Metrology & Instrumentation Annual Support Programs 2022/23

CN Tech's Support Programs will help ensure that your investment is protected, and that you and your instrument’s are always operating at peak performance.

Get in touch to discuss your requirements

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