Molecular jet source / Cluster source

Once in full operation, it will be possible to use this sample delivery system in either continuous or pulsed (under development) mode. Since the source is shared with other LDM beamlines, it is essential to discuss the availability and status with staff of the various beamlines well in advance. Note: an online booking procedure is planned for the future (information regarding this will be provided in due course).

DescriptionAdiabatic expansion source with cylindrical sample reservoir. Reservoir heating and nozzle heating possible.
ManipulatorZ-travel 400 mm, XY ±12.5 mm
NozzlesCu nozzles, typical opening diameter for a conical nozzle 150 µm (50-100 µm diameters flat nozzles are feasible)
TemperatureSample heating up to 150 °C possible
SamplesGaseous and Aqueous (for evaporation). All samples must be declared; aggressive, flammable or toxic samples may be denied
SeedingPossible: Via co-expansion
VacuumAncillary chamber with 2 x 500 l/s turbo pumps, where manipulator with sample rod is mounted, and an additional liquid nitrogen cold trap is planned
Operational modeContinuous and pulsed operational modes planned
Differential pumpingModular differential pumping setup with double skimmer (Cu skimmers, 50 µm – 1 cm in diameter) arrangement and 3 x 80 l/s turbo pumps planned
Compatible beamlines / end stationsFlexPES, FinEstBeAMS, ...

 

Liquid microjet source

Sketch of differential pumping insert planned for the liquid jet experiment at FlexPES:

ManipulatorZ-travel 400 mm, XY ±12.5 mm
NozzlesQuartz glass nozzles, typical opening diameter 20 µm (10-50 µm diameters are feasible)
Liquid deliveryHPLC pump, stainless steel cylinder, typical flows 0.5 - 1 ml/min; PEEK tubing and filters
TemperatureJacket with flowing liquid surrounding sample delivery tube for cooling/heating
SamplesAqueous solutions in particular, but other solvents possible (pending approval by MAX IV chemical safety group). Samples must be conductive to some degree to allow electron spectroscopy; ion concentration needed depends on species. All samples must be declared; aggressive, flammable or toxic samples may be denied.
DisposalSample caught in liquid nitrogen trap for subsequent disposal; no recycling possible
VacuumAncillary chamber with 1400 l/s turbo pump, where manipulator with sample rod is mounted, and additional liquid nitrogen cold trap.
Compatible beamlines / end stationsFlexPES, FinEstBeAMS, ...