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UHV point sources

The UHV point sources are heater elements designed for single use or for building up a cluster evaporator by yourself.

The head is made of quartz glass, sapphire or Al2O3 allowing a temperature range from 20°C to 1250°C. The heated head can be shielding off to reduce the energy consumption.

The crucibles for use with Q5, A5 and S5 have a maximum inner size of 0.1 cm3. The crucibles for Q3, A3 and S3 have a smaller exit angle and a maximum inner size of 0.035 cm3.

Due to the choice of material, the sources show very low degassing and allow an ultimately clean preparation. They can be removed easily in combination with a unit plug.

UHV point sources Q5 and Q3

Made of quartz glass and Macor®

Temperature range from 20°C to 950°C allows the preparation of most (UHV stable) organic molecules/substrate systems (including NaCl).
The point source is suitable for crucibles with OD 5mm (Q5) or OD 3mm (Q3) made of quartz glass.
Heater head consisting only of quartz glass and tungsten (apart from a very small ceramic fixing of the thermocouple).

UHV point source A5 and A3

Made of Al2O3 and titanium

Temperature range from 20°C to 1250°C allows the preparation of most (UHV stable) organic molecules/substrate systems (including NaCl) and some metals.
The point source is suitable for crucibles with OD 5mm (A5) or OD 3mm (A3) made of Al2O3.
Heater head consisting only of ceramic Al2O3 and tungsten (apart from a very small ceramic fixing of the thermocouple).

UHV point source S5 and S3

Made of sapphire and titanium

Temperature range from 20°C to 1250°C allows the preparation of most (UHV stable) organic molecules/substrate systems (including NaCl) and some metals.
The point source is suitable for crucibles with OD 5mm (S5) or OD 3mm (S3) made of sapphire.
Heater head consisting only of sapphire and tungsten (apart from a very small ceramic fixing of the thermocouple).
The properties of the sapphire guarantee very low degassing and a very low temperature gradient.

UHV point source A5C

Made of Al2O3

We are designing a new point source which should allow a temperature range of 20°C to 1500°C. This type shall be offered in summer 2020.
The point source is suitable for crucibles with OD 5mm made of Al2O3.
Heater head consisting only of ceramic Al2O3 and tungsten.

Decay curve


This curve shows the fast temperature decay without cooling. Decay curve

Connector


Socket for connecting the point source with a power supply.


Connector