Time-resolved soft x-ray absorption setup using multi-bunch operation modes at synchrotrons

Journal Article · Thu Dec 15 04:00:00 EST 2011 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.3669787· OSTI ID:22062377

Stebel, L; Sigalotti, P; Ressel, B; Cautero, G ^[1]; Malvestuto, M; Capogrosso, V ^[1]; Bondino, F; Magnano, E ^[2]; Parmigiani, F ^[1]

---

1. Sincrotrone Trieste, S.S. 14 km 163.5, Area Science Park, 34149 Basovizza (Italy)
2. IOM-CNR, TASC laboratory, S.S. 14 km 163.5, Area Science Park, 34149 Basovizza (Italy)

Here, we report on a novel experimental apparatus for performing time-resolved soft x-ray absorption spectroscopy in the sub-ns time scale using non-hybrid multi-bunch mode synchrotron radiation. The present setup is based on a variable repetition rate Ti:sapphire laser (pump pulse) synchronized with the {approx}500 MHz x-ray synchrotron radiation bunches and on a detection system that discriminates and singles out the significant x-ray photon pulses by means of a custom made photon counting unit. The whole setup has been validated by measuring the time evolution of the L{sub 3} absorption edge during the melting and the solidification of a Ge single crystal irradiated by an intense ultrafast laser pulse. These results pave the way for performing synchrotron time-resolved experiments in the sub-ns time domain with variable repetition rate exploiting the full flux of the synchrotron radiation.

• OSTI ID: 22062377
• Journal Information: Review of Scientific Instruments, Journal Name: Review of Scientific Instruments Journal Issue: 12 Vol. 82; ISSN 0034-6748; ISSN RSINAK
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
ABSORPTION
ABSORPTION SPECTROSCOPY
BEAM BUNCHING
GERMANIUM
LASERS
MELTING
MONOCRYSTALS
PHOTONS
PULSES
SAPPHIRE
SOFT X RADIATION
SOLIDIFICATION
SYNCHROTRON RADIATION
SYNCHROTRONS
TIME RESOLUTION
X-RAY SPECTROSCOPY