Journal of Low Temperature Physics

, Volume 148, Issue 3, pp 199–206

Observations of the Motion of Single Electrons in Liquid Helium


DOI: 10.1007/s10909-007-9373-2

Cite this article as:
Guo, W. & Maris, H.J. J Low Temp Phys (2007) 148: 199. doi:10.1007/s10909-007-9373-2


We have developed an apparatus which can be used to monitor the motion of individual electrons in liquid helium. A sound wave is used to explode an electron bubble for a fraction of a microsecond. While the bubble is expanded, it is illuminated by light from a flash lamp. We describe the details of the experiment and show results obtained. In some cases, an electron is seen to follow a snakelike path. Our tentative explanation is that the electron is sliding along a quantized vortex line. If this interpretation is correct, the recorded track of the electron provides an image of the path of the vortex.



Copyright information

© Springer Science+Business Media, LLC 2007

Authors and Affiliations

  1. 1.Department of PhysicsBrown UniversityProvidenceUSA