Time-resolved multiple probe spectroscopy

Greetham, G. M.; Sole, D.; Clark, I. P.; Parker, A. W.; Pollard, M. R.; Towrie, M.

doi:10.1063/1.4758999

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DOE OSTI · 22093774

Time-resolved multiple probe spectroscopy

Greetham, G. M.·Sole, D.·Clark, I. P.·Parker, A. W.·Pollard, M. R.·Towrie, M.

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Abstract

Time-resolved multiple probe spectroscopy combines optical, electronic, and data acquisition capabilities to enable measurement of picosecond to millisecond time-resolved spectra within a single experiment, using a single activation pulse. This technology enables a wide range of dynamic processes to be studied on a single laser and sample system. The technique includes a 1 kHz pump, 10 kHz probe flash photolysis-like mode of acquisition (pump-probe-probe-probe, etc.), increasing the amount of information from each experiment. We demonstrate the capability of the instrument by measuring the photolysis of tungsten hexacarbonyl (W(CO){sub 6}) monitored by IR absorption spectroscopy, following picosecond vibrational cooling of product formation through to slower bimolecular diffusion reactions on the microsecond time scale.

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46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY ABSORPTION SPECTROSCOPY CARBON MONOXIDE COOLING DATA ACQUISITION DIFFUSION INFRARED SPECTRA LASER RADIATION PHOTOLYSIS PULSES TIME RESOLUTION TUNGSTEN COMPOUNDS

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Greetham, G. M., Sole, D., Clark, I. P., Parker, A. W., Pollard, M. R., Towrie, M.. 2012-10-15. Time-resolved multiple probe spectroscopy. https://doi.org/10.1063/1.4758999

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