Delocalisation of electrons in dense helium gas by external electric field
- 14 May 1984
- journal article
- Published by IOP Publishing in Journal of Physics D: Applied Physics
- Vol. 17 (5) , 889-902
- https://doi.org/10.1088/0022-3727/17/5/006
Abstract
A theory of the sharp increase of the electron mobility as a function of the external field in dense helium gas is proposed. Low mobility of thermalised electrons is shown to be caused by their localisation in bubbles. Free electrons as well as bound ones are supposed to exist in the gas. As the external field increases free electrons are heated and redistribution of the numbers of free and bound electrons occurs. The fraction of free electrons and experimentally measured drift velocity rise steeply. In high fields the drift velocity attains its gas-kinetic value.Keywords
This publication has 18 references indexed in Scilit:
- Quantum density corrections to mobility and dispersion law for electrons in a medium of disordered scatterersJournal of Physics B: Atomic and Molecular Physics, 1982
- Theory of the density dependence of electron drift velocity in gasesPhysical Review A, 1978
- The electron drift velocity in dense gasesJournal of Physics D: Applied Physics, 1977
- Mobility of excess electrons andformation in dense fluid heliumPhysical Review B, 1975
- Density dependence of electron drift velocities in helium and hydrogen at 77.6 KApplied Physics B Laser and Optics, 1975
- Electron mobility and localization in dense He4gasJournal of Physics B: Atomic and Molecular Physics, 1973
- Self-Trapped States of an Electron in a Structurally Disordered SystemPhysical Review A, 1973
- Mobility of Excess Electrons in Gaseous He: A Semiclassical ApproachPhysical Review Letters, 1971
- Simple Model for Density of States and Mobility of an Electron in a Gas of Hard-Core ScatterersPhysical Review Letters, 1970
- NONLINEAR PHENOMENA IN A PLASMA LOCATED IN AN ALTERNATING ELECTROMAGNETIC FIELDSoviet Physics Uspekhi, 1960