Fluctuations in few-electron pulses between the quantum limit and space-charge regime (A04)

电子束和短电子脉冲是广泛的现代研究和技术的核心，但由于统计电子-电子相互作用，它们受到空间电荷效应的影响。在这里，我们将激光触发的少电子发射器与接近100%量子效率的飞秒单电子探测器结合起来，旨在探测单个粒子水平上光束波动的基本起源及其在空间和时间中的轨迹。

Electron beams and short electron pulses are central to a wide range of modern research and technology, but they suffer from space charge effects due to statistical electron-electron interactions. Here we combine laser-triggered few-electron emitters with a femtosecond single-electron detector at close to 100% quantum efficiency and aim for detecting the fundamental origin of beam fluctuations on the level of the individual particles and their trajectories in space and time.