期刊
REVIEW OF SCIENTIFIC INSTRUMENTS
卷 82, 期 12, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.3669787
关键词
particle beam bunching; photon counting; synchrotron radiation; synchrotrons; X-ray absorption; X-ray spectroscopy
资金
- MIUR
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 similar to 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-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. (C) 2011 American Institute of Physics. [doi:10.1063/1.3669787]
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