LIQUIDROME

Liquids and degassing samples equipment

Liquidrom is a vacuum system dedicated to x-ray photoelectron spectroscopy (XPS) and x-ray absorption spectroscopy (XAS) for liquid samples. The system is equipped with time-of-flight (TOF) electron energy analyzer and GaAs photodiode as electron and photon detectors respectively. Intense laser pulses, synchronized with the synchrotron x-ray pulses (only in single bunch mode), are often employed in Liquidrom system to excite (pump) samples by laser and successively (within nanoseconds) measure (probe) samples by x-ray in order to study the dynamic properties of various liquid phase molecules in strong laser field (Pump-Probe experiment).

Liquidrom endstation without installation of TOF and laser

Liquidrom endstation without installation of TOF and laser

Design of the TOF electron spectrometer

Design of the TOF electron spectrometer

TOF: Image of the fluorescence screen recorded with an exposure time of 100 ms from a CCD camera at a count rate of approximately 20 000 events per second

TOF: Image of the fluorescence screen recorded with an exposure time of 100 ms from a CCD camera at a count rate of approximately 20 000 events per second

TOF: Energy resolution (dependent on electron kinetic energy) obtained for the magnetic-bottle (closed circles) and the field-free (open circles) spectrometer configurations

TOF: Energy resolution (dependent on electron kinetic energy) obtained for the magnetic-bottle (closed circles) and the field-free (open circles) spectrometer configurations

List of publications
Station data
Temperature range 283 - 373 K
Pressure Range
Detector time-of-flight (TOF) electron energy analyzer, GaAs photodiode
Manipulators motorized XYZ sample manipulator with micrometer precision
Sample holder compatibility
Beamline(s)

U49-2_PGM-1

Chamber pressure 10^-5 mbar base pressure in main chamber and 10^-8 mbar in TOF analyzer when liquidjet running in main chamber

Methods

NEXAFS, XRF, XPS