Efficiency of Excitation by Electron Impact and Anomalous Scattering in Mercury Vapor
- 1 August 1929
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 34 (3) , 474-485
- https://doi.org/10.1103/physrev.34.474
Abstract
The efficiency of excitation by electron impact of the 6.67 volt resonance level in the mercury atom has been studied as a function of the energy of the incident electrons. The electrons that have lost energy are separated out by a small retarding field and measured. The number of collisions is calculated from the experimentally determined value of the mean free path. The range covered is 0.4 volt from 6.67 to 7.07 giving a value for every 0.1 volt of the interval. The efficiency reaches a maximum of about 0.06 at 6.77 volts and then falls off to 0.04 at 7.0 volts.Keywords
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