Infrared and X-ray simultaneous spectroscopy: a novel conceptual beamline design for time resolved experiments
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Many physical/chemical processes such as metal–insulator transitions or self-assembly phenomena involve correlated changes of electronic and atomic structure in a wide time range from microseconds to minutes. To investigate these dynamic processes we not only need a highly brilliant photon source in order to achieve high spatial and time resolution but new experimental methods have to be implemented. Here we present a new optical layout for performing simultaneous or concurrent infrared and X-ray measurements. This approach may indeed return unique information for example the interplay between structural changes and chemical processes occurring in the investigated sample. A beamline combining two X-ray and IR beams may really take advantage of the unique synchrotron radiation properties: the high brilliance and the broad spectrum. In this contribution we will describe the conceptual layout and the expected performance of a complex system designed to collect IR and X-ray radiation from the same bending magnet on a third-generation synchrotron radiation ring. If realized, this beamline will enable time-resolved spectroscopy experiments offering new scientific opportunities at the frontiers of science.
KeywordsSynchrotron radiation instrumentation X-ray absorption spectroscopy EXAFS, XANES, etc. Infrared spectrometers, auxiliary equipment, and techniques Time resolved spectroscopy
We gratefully acknowledge the support of the Italian Ministry Foreign Affairs in the framework of the 12th Executive Programme of Scientific and Technological Cooperation between the Italian Republic and the People’s Republic of China. We sincerely acknowledge the SSRF facility that provided detailed information for the front-end beamline design. One of the authors (WX) thanks the Italian Ministry of Foreign Affairs for financial support and acknowledges the hospitality of the LNF where a significant portion of this work has been performed. Special thanks are devoted to Manuel Sanchez del Rio, Qingxi Yuan, Lingyun Tang, Zeming Qi, Alessio Bocci, and Paul Dumas for many useful discussions. This work was partly supported by the Knowledge Innovation Program of the Chinese Academy of Sciences (KJCX2-YW-N42).
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