Compatible with most MBE systems
Large capacity 150 cm3 evaporator
Ideal source for Cs and Rb evaporation
Easy and safe refilling procedure
Precise and very fast flux control
The Valved Alkali Metal Source AKS is designed for evaporation of elemental high vapor pressure alkali metals like cesium (Cs) and rubidium (Rb) in standard MBE or UHV systems.
HPM power supply, controllers, cables and heating thermostat of the AKS system
The AKS consists of the 150 cm3 reservoir, precisely heated by a closed cycle heating thermostat, the heated valve and the heated injector unit which acts as interface to the UHV system. Both components, valve and injector, are independently heated electrically to avoid material condensation. An additional rotary shutter is available on request. The injector tube is water cooled on its outside to reduce the thermal load on the UHV system and to minimize outgassing during operation.
Refilling unit for AKS evaporator reservoir
ApplicationThe main purpose of the Valved Alkali Metal Source AKS is the controlled evaporation of elemental alkali metals like Cs or Rb from the heated reservoir inside the cell into a vacuum chamber under high to ultra-high vacuum conditions (i.e. pressures below 1x10-6 mbar).
Typical applications for the AKS are:
|Filament type||3 separate heater circuits (evaporator reservoir, valve & injector units)|
|Thermocouple||2x type K Chromel/Alumel (injector/valve); 1x PT100 (evaporator reservoir)|
|Operating temperature||injector: 300°C; valve: 300°C; reservoir: 270°C|
|Outgassing temperature||injector: 300°C; valve: 300°C; reservoir: 270°C|
|Flux control||switchable valve unit|
|Valve control||pneumatic operation, manual and remote control with TTL signal|
For general information on CF mounting flanges see Flange and Gasket dimensions.
|[cm3]||[mm] / [mm]||[W] / [A]||Product code|
|AKS||63* -||150-||S**-||LxxxD57||2300 / 10||HPM control unit|
|*||other mounting flange diameters on request|
|**||rotary shutter possible on same flange (requires min. tube I.D. 63mm)|
|***||specify UHV length L with order|
e.g. AKS 63-150-S-L300D57
is a valved alkali metal source on DN63 CF flange with 150cm³ evaporator reservoir, shutter and UHV-length 300mm.