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Valved Cracker Effusion Cell |
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Effusion Cells
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Product description:
The valved cracker cell combines the
evaporation and cracking of elements like P, S, As, Se, Te, etc. with a
valve to reproducibly control and rapidly change the beam flux over
more than two orders of magnitude. The valve is located at the orifice
and is heated to prevent any condensation of material.
Applications:
| Material |
Symbol
|
Crucible
|
Melting point
(°C)
|
Temperature (°C) for
Vapor Pressure (Torr)
|
| |
|
|
|
|
| Antimony |
Sb
|
PBN
|
631
|
279
|
345
|
425
|
| Arsenic |
As
|
PBN |
817
|
104
|
150
|
210
|
| Phosphorus |
P
|
PBN, Al2O3,
Ta, Mo
|
44 |
54
|
88
|
192
|
| Selenium |
Se
|
PBN
|
221 |
63
|
107
|
164
|
| Sulfur |
S
|
PBN |
115 |
-10
|
17
|
55
|
| Tellurium |
Te
|
PBN |
450
|
155
|
209
|
280
|
Technical data:
| Standard: |
|
Type
|
V - CRC
|
| Heating system |
Radiation heating, tantalum wires with PBN insulators
|
Temperature range
|
100 C - 800 C bulk zone 100 C - 1000 C cracker
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Temperature stability
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≤ 0.1 K depending on the PID controller
|
Max. outgas temp
|
1200 C without crucible
800 C - 1200 C depending on the crucible material
1200 C cracker
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Max. power
|
220 W bulk zone
180 W cracker
|
Max. current
|
8 A bulk zone
9 A cracker
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Integral valve
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manual
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Bakeout temperature
|
250 C
|
Conditioning
|
Heated to maximum temperature with and without crucible
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Shipping
|
Nitrogen flooded stainless steel container with valve
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| Custom: |
|
Flange size
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CF 40 / CF 63 or specified
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Max outer diameter
|
38 mm / 60 mm or specified
|
Length
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As specified
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Thermocouple type
|
Two independent thermocouples
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Crucible material
|
type C / WRe 5% - 26%
Ta / Quartz
|
Crucible capacity
|
80 ccm - 500 ccm
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Options:
Motorized version
Water cooling
Other dimensions |
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