Publication: Vacuum space charge effects in sub-picosecond soft X-ray photoemission on a molecular adsorbate layer
Loading...
Files
Program
KU-Authors
Organization Authors
Co-Authors
Dell'Angela, M.
Anniyev, T.
Beye, M.
Coffee, R.
Fohlisch, A.
Gladh, J.
Kaya, S.
Katayama, T.
Krupin, O.
Nilsson, A.
Date
Language
Type
Embargo Status
NO
Journal Title
Journal ISSN
Volume Title
Alternative Title
Abstract
Vacuum space charge induced kinetic energy shifts of O 1s and Ru 3d core levels in femtosecond soft X-ray photoemission spectra (PES) have been studied at a free electron laser (FEL) for an oxygen layer on Ru(0001). We fully reproduced the measurements by simulating the in-vacuum expansion of the photoelectrons and demonstrate the space charge contribution of the high-order harmonics in the FEL beam. Employing the same analysis for 400 nm pump-X-ray probe PES, we can disentangle the delay dependent Ru 3d energy shifts into effects induced by space charge and by lattice heating from the femtosecond pump pulse.
Source
Publisher
American Institute of Physics (AIP) Publishing
Subject
Citation
item.page.haspartof
Source
Structural Dynamics
item.page.ispartofseries
item.page.edition
DOI
10.1063/1.4914892