Experimental Electron Energy Distributions for Townsend Discharges in Helium
- 4 February 1966
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 142 (1), 100-104
- https://doi.org/10.1103/physrev.142.100
Abstract
The energy distribution of electrons in Townsend discharges in helium has been investigated experimentally for a range of between 1.65× and 6.32× V , through the use of a retarding-field method. The effects of electron reflection and secondary emission from the surfaces of the retarding-field analyzer are considered; it is shown that these phenomena are relatively unimportant when low-reflectance materials are used to coat analyzer surfaces. Experimental energy distributions exhibit a curtailment of the distribution function near the first excitation potential of helium, except for V . The low-energy behavior of the experimental energy distribution indicates an increase of the most probable energy with increasing .
Keywords
This publication has 12 references indexed in Scilit:
- Experimental Determinations of the First Townsend Ionization Coefficient in HeliumPhysical Review B, 1964
- Electron Reflection from Cesium-Coated Polycrystalline Metals at Low Primary EnergyJournal of Applied Physics, 1963
- Reflection and Diffraction of Slow Electrons from Single Crystals of TungstenPhysical Review B, 1963
- Electron energy distribution functions and transport coefficients for the rare gasesProceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences, 1963
- Rotational Excitation and Momentum Transfer Cross Sections for Electrons inandfrom Transport CoefficientsPhysical Review B, 1962
- Electron Velocity Distributions in a Partially Ionized GasPhysical Review B, 1960
- Electron energy distributions in uniform electric fields and the Townsend ionization coefficientProceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences, 1958
- The Free Fall of Atoms and the Measurement of the Velocity Distribution in a Molecular Beam of Cesium AtomsPhysical Review B, 1947
- Bombardment of Metal Surfaces by Slow-Moving ElectronsPhysical Review B, 1922
- Die Gesetze der Molekularströmung und der inneren Reibungsströmung der Gase durch RöhrenAnnalen der Physik, 1909