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DTSTART;VALUE=DATE:20200601
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DTSTAMP:20260718T122210
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SUMMARY:Anne Marie March:  Capturing photochemical reaction intermediates with time-resolved synchrotron x-ray spectroscopy
DESCRIPTION:The pump-probe technique allows for measurement of timescales that are shorter than a detector’s response time. Using a MHz-repetition-rate laser to pump a sample\, the full x-ray flux of synchrotrons such as the Advanced Photon Source (APS) can be used to probe the ensuing photoinduced reaction(s). The obtained time-resolved XAS and XES spectra can be used to capture the electronic and geometric structure of short lived intermediate species. In this presentation\, I will give a brief introduction to the pump-probe measurement technique as implemented at Sector 7 of the APS and present recent studies of the photoinduced aquation reaction of [FeII(CN)6]4-\, where we were able to detect an intermediate species with a lifetime 4x shorter than the x-ray probe pulse duration.  \nReferences: \n\nhttps://doi.org/10.1063/1.5117318\nhttps://doi.org/10.1107/S1600577519012268\n\n 
URL:https://xrayabsorption.org/events/journlclub-anne-marie-march/
CATEGORIES:XAFS Journal Club
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