Novel Methods to Create Multielectron Bubbles in Superfluid Helium

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Novel Methods to Create Multielectron Bubbles in Superfluid Helium

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Title: Novel Methods to Create Multielectron Bubbles in Superfluid Helium
Author: Fang, Jieping; Dementyev, Anatoly E.; Tempere, Jacques; Silvera, Isaac F.

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Citation: Fang, Jieping, Anatoly E. Dementyev, Jacques Tempere, and Isaac F. Silvera. 2011. Novel methods to create multielectron bubbles in superfluid helium. Review of Scientific Instruments 82(3): 033904.
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Abstract: An equilibrium multielectron bubble (MEB) in liquid helium is a fascinating object with a spherical two-dimensional electron gas on its surface. We discuss two ways in which they have been created. For MEBs that have been observed in the dome of a cylindrical cell with an unexpectedly short lifetime, we show analytically why these MEBs can discharge by tunneling. Using a novel method, MEBs have been extracted from a vapor sheath around a hot filament in superfluid helium by applying electric fields up to 15 kV/cm, and photographed with high-speed video. Charges as high as \(1.6 × 10^{−9} C\) \((∼10^{10} electrons)\) have been measured. The latter method provides a means of capture in an electromagnetic trap to allow the study of the extensive exciting properties of these elusive objects.
Published Version: doi:10.1063/1.3553030
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  • FAS Scholarly Articles [8255]
    Peer reviewed scholarly articles from the Faculty of Arts and Sciences of Harvard University

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