Journal
REVIEW OF SCIENTIFIC INSTRUMENTS
Volume 74, Issue 9, Pages 4071-4076Publisher
AMER INST PHYSICS
DOI: 10.1063/1.1602943
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Helium nanodroplets are doped with metal atoms by means of laser evaporation. The material is evaporated directly in front of the helium nozzle by a pulsed laser. In comparison with conventional pickup from an oven we deduce that the droplets can be loaded with more than one atom per droplet on average. Conditions and efficiencies for loading are evaluated. Furthermore, metal ions can be attached to helium droplets by this method, allowing isolation of charged particles at temperatures below 1 K. In this way we can directly measure size distributions of helium nanodroplets which are compared to results using other techniques. (C) 2003 American Institute of Physics.
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