A Study of the Velocities ofIons Formed in Hydrogen by Dissociation Following Electron Impact
- 15 October 1930
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 36 (8) , 1285-1292
- https://doi.org/10.1103/physrev.36.1285
Abstract
An apparatus is described which is suitable for a study of the velocity distribution of ions formed by single electron impact Electrons, confined to a narrow beam by a magnetic field, pass along the axis of two coaxial cylinders, ionize the gas, and are collected by a trap. The thick, inner cylinder, which is slotted, serves to allow only ions moving perpendicularly to the electron beam to pass to the outer collecting cylinder. A retarding voltage is applied between the cylinders. A study of the positive ion current collected as a function of the retarding voltage permits a determination of the velocity distribution of the ions. The above method is employed in a study of hydrogen.Keywords
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