CINEMATOGRAPHIC INVESTIGATION OF BUBBLONS IN SUPERFLUID HELIUM

1 August 1978

journal article
Published by EDP Sciences in Le Journal de Physique Colloques

Vol. 39 (C6) , C6-1295
https://doi.org/10.1051/jphyscol:19786561

Abstract

The instability of the liquid helium surface charged with the electrons localized near the surface is investigated by means of a speed camera. The film shows how electrons leave the surface in bubblons diving into the superfluid helium. The word "bubblon" means a bubble containing 107 ÷ 108 electrons and having dimensions of 0.05 - 0.3 mm. Small bubblons are stable and in electric field ~ 1 CGSE they move through helium with constant velocity of ~ 104 cm/s. Furthermore an idea of an existence of "dielectric" energy levels of electrons localized near a small dielectric particle is discussed. The spectrum of dielectric levels lasts from optical frequencies (for ion) up to 1012 ÷ 1011 c/s (for particles measuring 10-6 cm and larger)

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