Single Filament Effusion Cell
SFC
This type of effusion cell is designed for the evaporation of materials such as germanium,tin, gold,silicon,copper etc. A tantalum wire is used for the heating system and PBN rings for the electrical isolation. The heating system is surrounded by several Tantalum foils to minimize heat radiation. A direct heat transfer from the filament to the crucible reduces the power consumption and gives an excellent control of the flux. PBN crucibles are standard with this type of effusion cells. Other crucible materials are possible.
Technical Data:
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Standard: |
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Type |
SFC |
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Heating System |
Radiation heating, tantalum wires with PBN insulators |
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Temperature range |
200 °C ...1400 °C |
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Temperature stability |
=0.1 K depending on the PID controller |
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Max. outgas temp. |
1600 °C |
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Max. power |
360 W (NW 40 CF) |
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Max. current |
12A |
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Bakeout temperature |
250 °C |
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Conditioning |
Heated to maximum temperature with and without crucible |
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Shipping |
Stainless steel container with valve |
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Custom: |
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Flange size |
CF 40 / CF 63 / CF 100 or specified |
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Max outer diameter |
38 mm / 63mm / 100mm etc. |
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Length |
As specified |
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Thermocouple type |
Type C / WRe 5%-26% (or specified) |
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Crucible material |
PBN / PGR / W / Ta / Mo / quartz |
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Crucible capacity |
All standard sizes or specified |
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(PDF)