Ultracold Electron Bunches
The ability to study the dynamics of non-equilibrium structures with both spatial and temporal resolution at the atomic level (i.e., 1 nm and 100 fs) would advance both physics, chemistry, and biology. In this project, new electron beam regimes are investigated in order to achieve single-shot, ultrafast electron diffraction of structures such as macromoleucles. This requires beams with a large transverse coherence length and a high brightness. We are developing pulsed electron beams that achieve this by virtue of their ultralow temperature of just a few K. Such unique beams can be extracted from an ultracold plasma, which is turn is created from a laser-cooled and trapped atomic gas by pulsed laser-excitation.
Keywords High-brightness electron beams, ultracold plasmas, ultrafast electron diffraction, femtosecond lasers, and laser cooling and trapping.
People involved: The following people are or have been involved in this project:
|PhD students||Wouter Engelen and Nicola Debernardi|
|Recent PhD graduates||Merijn Reijnders, Gabriel Taban and Bert Claessens|
|MSc students||Clemens Rammeloo|
|BSc students||Gijs ten Haaf|
|Recent MSc/BSc graduates||Erwin Smakman, Marloes van der Heijden, Joost van Heijst|
|Staff members||Bas van der Geer, Marieke de Loos, Peter Mutsaers, Edgar Vredenbregt, and Jom Luiten|
Funding for this project is provided by The Technology Foundation (STW), Netherlands Organisation for Scientific Research (NWO), and the Netherlands Organisation for Fundamental Research on Matter (FOM). The project is sponsored by FEI Company, and Pulsar Physics