N. Bergeard, M. Silly, C. Chauvet, M. Izquierdo, M. Guzzi, F. Sirotti
TEMPO Beamline, SOLEIL Synchrotron
D.Krizmancic
APE Beamline, Elettra Synchrotron, Italy
L. Stebel, P. Pittana, G.Cautero
Instrumentation and Detectors Labs, Elettra Synchrotron, Italy
We have performed Photoelectron spectroscopy experiments using the time structure of the SOLEIL synchrotron radiation source. A time resolution of 5ns is obtained using a new 2 dimensional delay line detector, installed after a SCIENTA SES 2002 electron energy analyzer. The first application has been to characterize the time of flight of the photoemitted electrons in the analyzer as a function of their kinetic energy and the selected pass energy.
In the figure are shown some of the Kinetic energy/ Momentum images obtained each 5 ns for 100eV pass energy and 500 eV kinetic energy. The time spread of the electrons arrival at the detector is of 50ns as shown in the central diagram in the figure. The zero of the time scale is defined by the SOLEIL synchrotron radiation pulses. Even for kinetic energies as low as 10 eV at 2 eV pass energy, the time spread of the electrons is lower than 100ns. Repeating the experiment as a function of the available pass energy and of the kinetic energy we have obtained a complete characterization of the analyzer behavior in the time domain.
These results assure the possibility to perform pump probe experiments using Lasers and SOLEIL Synchrotron Radiation with 30 ps time resolution and the best performance of the beamline and of the experimental station.
