A new optical technique enables electron beam currents to be measured with a femtosecond temporal resolution.
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Kielpinski, D. Electrons on a winning streak. Nature Photon 8, 5–6 (2014). https://doi.org/10.1038/nphoton.2013.352
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DOI: https://doi.org/10.1038/nphoton.2013.352
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