@article{ reijnders_low-energy-spread_2009,
  title = {Low-Energy-Spread Ion Bunches from a Trapped Atomic Gas},
  volume = {102},
  url = {http://link.aps.org/doi/10.1103/PhysRevLett.102.034802},
  doi = {10.1103/PhysRevLett.102.034802},
  abstract = {We present time-of-flight measurements of the longitudinal energy spread of pulsed ultracold ion beams, produced by near-threshold ionization of rubidium atoms captured in a magneto-optical atom trap. Well-defined pulsed beams have been produced with energies of only 1 {eV} and a root-mean-square energy spread as low as 0.02 {eV}, 2 orders of magnitude lower than the state-of-the-art gallium liquid-metal ion source. The low energy spread is important for focused ion beam technology because it enables milling and ion-beam-induced deposition at sub-nm length scales with many ionic species, both light and heavy. In addition, we show that the slowly moving, low-energy-spread ion bunches are ideal for studying intricate space charge effects in pulsed beams. As an example, we present a detailed study of the transition from space charge dominated dynamics to ballistic motion.},
  number = {3},
  urldate = {2014-04-01TZ},
  journal = {Physical Review Letters},
  author = {Reijnders, M. P. and van Kruisbergen, P. A. and Taban, G. and van der Geer, S. B. and Mutsaers, P. H. A. and Vredenbregt, E. J. D. and Luiten, O. J.},
  month = {January},
  year = {2009},
  pages = {034802}
}

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