Pump−probe experiments at the TEMPO beamline using the low-α operation mode of Synchrotron SOLEIL

Abstract : The SOLEIL synchrotron radiation source is regularly operated in special filling modes dedicated to pump–probe experiments. Among others, the low-mode operation is characterized by shorter pulse duration and represents the natural bridge between 50 ps synchrotron pulses and femtosecond experiments. Here, the capabilities in low-mode of the experimental setups developed at the TEMPO beamline to perform pump–probe experiments with soft X-rays based on photoelectron or photon detection are presented. A 282 kHz repetition-rate femtosecond laser is synchronized with the synchrotron radiation time structure to induce fast electronic and/or magnetic excitations. Detection is performed using a two-dimensional space resolution plus time resolution detector based on microchannel plates equipped with a delay line. Results of time-resolved photoelectron spectroscopy, circular dichroism and magnetic scattering experiments are reported, and their respective advantages and limitations in the framework of high-time-resolution pump–probe experiments compared and discussed.
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Journal of Synchrotron Radiation, International Union of Crystallography, 2017, 24 (4), pp.886 - 897. 〈10.1107/S1600577517007913〉
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Mathieu Silly, Tom Ferté, Marie Agnès Tordeux, Debora Pierucci, Nathan Beaulieu, et al.. Pump−probe experiments at the TEMPO beamline using the low-α operation mode of Synchrotron SOLEIL. Journal of Synchrotron Radiation, International Union of Crystallography, 2017, 24 (4), pp.886 - 897. 〈10.1107/S1600577517007913〉. 〈hal-01624336〉

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