Sample Delivery
The sample delivery for the REMI consists of a three-stage supersonic gas jet, that can be extended to four stages in order to generate very dilute targets. Four piezo-controlled apertures can be used to further modify the gas jet geometry. The jet nozzle can be operated at temperatures from 5 K to 450 K, providing the possibility to generate small clusters or droplets, as well as evaporating liquid substances. Three nozzles of different sizes (e.g. 5 µm to 300 µm diameter) are installed in the expansion chamber and can be switched “on the fly”.