Cesar D, Musumeci P
Department of Physics and Astronomy, UCLA, Los Angeles, CA 90095, USA.
Department of Physics and Astronomy, UCLA, Los Angeles, CA 90095, USA.
Ultramicroscopy. 2019 Apr;199:1-6. doi: 10.1016/j.ultramic.2019.01.003. Epub 2019 Jan 29.
One of the frontiers of modern electron scattering instrumentation is improving temporal resolution in order to enable the observation of dynamical phenomena at their fundamental time-scales. We analyze how a radiofrequency cavity can be used as an electron longitudinal lens in order to produce a highly magnified temporal replica of an ultrafast process, and, in combination with a deflecting cavity, enable streaked electron images of optical-frequency phenomena. We present start-to-end simulations of an MeV electron beamline for two variations of this idea (a "magnifying-glass" and a "point-projection" configuration) showing the feasibility for an electron probe to achieve single shot 1.4 fs(rms) temporal resolution.
