Resonance Scattering and the Drift Motion of Electrons through Gases
- 5 August 1968
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 172 (1), 118-125
- https://doi.org/10.1103/PhysRev.172.118
Abstract
Density-dependent values of the electron drift velocity in hydrogen, deuterium, and nitrogen gas have recently been reported. Their reciprocal values are shown to be a linear function of the gas density. Several possible theoretical explanations are discussed, some of which lead to such a linear pressure dependence. It is concluded that electron trapping by some low-energy resonance states is likely to take place. "Rotational resonances" in atomrotator scattering have been described in a theoretical paper by Kouri, and it is thought that rotational resonances should be observed in electron-molecule scattering as well, at electron energies close to thermal energy. At the higher electron energies (≃1 eV), the known "single-particle" resonance states of and near 2 eV are probably responsible for the delay in the electron motion at high densities.
Keywords
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