Electron gun for diffraction experiments off controlled molecules

@article{Mller2015ElectronGF,
  title={Electron gun for diffraction experiments off controlled molecules},
  author={Nele Lotte Marie M{\"u}ller and Sebastian Trippel and Karol Długołȩcki and Jochen K{\"u}pper},
  journal={Journal of Physics B: Atomic, Molecular and Optical Physics},
  year={2015},
  volume={48}
}
A dc electron gun, generating picosecond pulses with up to 8 × 106 electrons per pulse has been developed. Its applicability for future time-resolved diffraction experiments on state- and conformer-selected laser-aligned or oriented gaseous samples was characterized. The focusing electrodes were arranged in a velocity-map imaging spectrometer configuration. This allowed us to directly measure the spatial and velocity distributions of the electron pulses emitted from the cathode. The coherence… 
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