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，它们会受到空间电荷效应的影响。在这里，我们结合联合收割机激光触发的少电子发射器与飞秒单电子探测器在接近100%的量子效率，并旨在检测的基本起源的光束波动的水平上的单个粒子和它们的轨迹在空间和时间。

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.