FEMTOSPEX surface dynamics

Excited states dynamics with x-rays @ BESSY-VSR at UE56_1-PGM

Sliced and unsliced raw data of Au 4f lines. a) Slicing off b) slicing on c) Difference of a) and b)

Methods

XMLD, XMCD, Time-resolved studies, NEXAFS, EXAFS, XPS, UPS, ARPES

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
More details	UE56-1_PGM
Station data
Temperature range	20K - 400K
Pressure range	2e-10mbar up to 1e-6mbar
Detector	VG Scienta ARTOF EW 60° lens.
Manipulators	5 axis manipulator
Sample holder compatibility	Mounting system for puck style sample holders like in the FemtoSpeX: Scattering endstation
Additional equipment
Sample Preparation	Sputter gun, In situ cleaving

Time resolved electronspectroscopy on solid surfaces with femtosecond and picosecond laser-pump/X-ray-probe ArTOF spectroscopy and method development for BESSY-VSR