Schematic Illustration of Pulse Picking by Resonant Excitation (image) Helmholtz-Zentrum Berlin für Materialien und Energie Share Print E-Mail Caption In regular operation the non-excited bunches (grey) emit undulator radiation on-axis. A detour in the electron beam (bump) makes that this regular radiation is emitted off-axis and dumped into an aperture. Only the part of the radiation from a quasi-resonantly excited bunch (blue) can enter the beamline mimicking a turn-by-turn single bunch emission. Credit Graphics: Ela Strickert/HZB Usage Restrictions None Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.