FEMTOSPEX surface dynamics
Excited states dynamics with x-rays at UE56_1-PGM
The end station FEMTOSPEX Surface Dynamics enables angle- and time-resolved photoelectron spectroscopy. The acceptance angle of the spectrometer is max. 60 °. The time resolution is given by the pulse length of the X-ray pulses from Bessy. Femtosecond slicing can be used. The pump laser offers a maximum repetition rate of 6kHz with about 1.2mJ per pulse (800nm). The second harmonic (400nm) can be used without any problems. The use of an OPA is also possible.
Anwendungsbeispiele:- Core-hole-clock (CHC) Spectroscopy
- time-resolved Photo Electron Spectroscopy
- Photo Electron Diffraction
Methods
Time-resolved PES, Time-resolved absorption
Remote access
not possible
| Beamline data | |
|---|---|
| Energy range | 60 - 1300 eV |
| Energy resolution | > 100,000 at 64 eV, > 20,000 at 400 eV |
| Flux | 2.5·1011 |
| Polarisation | • linear horizontal vertical • circular |
| Focus size (hor. x vert.) | 85 µm (hor) x 15 µm (vert, dep. on exit slit) |
| Phone | 17980, 17981, 17982 |
| Weitere Details | UE56-1_PGM |
| Station data | |
| Temperature range | 20 - 400 K |
| Pressure range | 6 x 11-10 mbar up to 1 x 10-6 mbar |
| Detector | VG Scienta ARTOF EW 60° lens. |
| Manipulators | 5 axis manipulator |
| Sample holder compatibility | Omicron flag style sample holders |
| Additional equipment | 2 sputter guns, Auger-LEED system, Gas Dosing system, Electron bombardement and filament heating |
| Probenvorbereitung | Sputter gun, In situ cleaving, gas dosing system, evaporator, quartz balance, electron bombardement heating |
Zeitaufgelöste Elektronenspektroskopie an Festkörperoberflächen mit femtosekunden und pikosekunden Laser-Pump/x-ray-Probe -ArTOF Spektroskopie sowie Methodenentwicklung.