Wake potential of swift ions in solids
- 1 December 1976
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 14 (11) , 4808-4812
- https://doi.org/10.1103/physrevb.14.4808
Abstract
Valence-electron density fluctuations are expected to form wakes trailing charged particles moving through condensed matter with velocities larger than the Bohr velocity. We compute the resulting wake potential with a quantum-mechanical dielectric response function of the electron gas which includes plasmon dispersion as well as single-particle effects at the densities of metallic conduction electrons. The binding energy of electrons trapped in this potential ranges from ∼5 eV behind protons to ∼50 eV behind heavy ions moving with kinetic energies ∼1 MeV/amu. The effects of quantum fluctuations on the binding energy and the lifetime of the wake-riding state are estimated.Keywords
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