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要旨

Although radio frequency (RF) technology is routinely employed for controlling high-energy pulses of electrons, corresponding technology
has not been developed at beam energies below several kiloelectronvolts. In this work, we demonstrate transverse and longitudinal phase-
space manipulation of low-energy electron pulses using RF fields. A millimeter-sized photoelectron gun is combined with synchronized
streaking and compression cavities driven at frequencies of 0:5 and 2:5 GHz, respectively. The phase-controlled acceleration and deceleration
of photoelectron pulses is characterized in the energy range of 50–100 eV. Deflection from a transient space-charge cloud at a metal grid is
used to measure a fourfold compression of 80 - eV electron pulses, from s ¼ 34 to s ¼ 8 ps pulse duration