Low Temperature Physics: 37, 803 (2011); https://doi.org/10.1063/1.3665872 (3 pages)
Fizika Nizkikh Temperatur: Volume 37, Number 9-10 (September 2011), p. 1008-1010    ( to contents , go back )

Negative ions at helium mixtures interface

A.M. Dyugaev, P.D. Grigoriev

L.D. Landau Institute for Theoretical Physics, Chernogolovka, Russia
E-mail: dyugaev@itp.ac.ru

E.V. Lebedeva

Institute of Solid State Physics RAS, Chernogolovka, Moscow district 142432, Russian Federation
pos Анотація:

Received March 4, 2011

Abstract

The properties of electron bubbles localized at the interface between 3He and 3He–4He mixture by polarization attraction force have been studied in a lowtemperature region. The equilibrium state of such objects is characterized by a binding energy of 6.5 K and an oscillating spectrum of the first excitations with a frequency 0.6·1010 s–1. Shifting electric field E = 100 V/cm at T = 0.2 K leads to decay of the binding bubble state with lifetime τ ≈ 1 s. The experimental study of bubble electron states may be useful for testing liquid helium mixtures interface.

PACS: 67.60.G Solutions of 3He in liquid 4He.

Key words: low temperatures, negative ions, liquid helium mixtures.

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