Time-resolved x-ray photoelectron spectroscopy at FLASH
Författare
Summary, in English
The technique of time-resolved pump-probe x-ray photoelectron spectroscopy using the free-electron laser in Hamburg (FLASH) is described in detail. Particular foci lie on the macrobunch resolving detection scheme, the role of vacuum space-charge effects and the synchronization of pump and probe lasers. In an exemplary case study, the complete Ta 4f core-level dynamics in the layered charge-density-wave (CDW) compound 1T-TaS2 in response to impulsive optical excitation is measured on the sub-picosecond to nanosecond timescale. The observed multi-component dynamics is related to the intrinsic melting and reformation of the CDW as well as to extrinsic pump-laser-induced vacuum space-charge effects.
Avdelning/ar
Publiceringsår
2012
Språk
Engelska
Publikation/Tidskrift/Serie
New Journal of Physics
Volym
14
Dokumenttyp
Artikel i tidskrift
Förlag
IOP Publishing
Ämne
- Natural Sciences
- Physical Sciences
Status
Published
ISBN/ISSN/Övrigt
- ISSN: 1367-2630