Production of Charged and Neutral Liquid Helium Drops

  • C. G. Paine
  • D. Petrac
  • W. K. Rhim
Part of the A Cryogenic Engineering Conference Publication book series (ACRE, volume 41)


We report on two means of producing drops of liquid helium for injection into an apparatus designed to hold individual drops isolated from material walls. Using a small thermomechanical pump operated in a pulsed mode, we have produced uncharged drops of the superfluid; charged drops of both the normal fluid and superfluid have been produced through electrohydrodynamic effects of a sharply pointed conductor within the bulk liquid, which caused charge-carrying drops to be ejected from the liquid surface.


Liquid Helium Field Ionization Charged Drop Nozzle Orifice Ionization Electrode 
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Copyright information

© Plenum Press, New York 1996

Authors and Affiliations

  • C. G. Paine
    • 1
  • D. Petrac
    • 1
  • W. K. Rhim
    • 1
  1. 1.Jet Propulsion LaboratoryCalifornia Institute of TechnologyPasadenaUSA

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