Lyman-Alpha Emission Induced by the Collisions of Electrons with Molecular Hydrogen
- 15 August 1971
- journal article
- research article
- Published by AIP Publishing in The Journal of Chemical Physics
- Vol. 55 (4) , 1670-1672
- https://doi.org/10.1063/1.1676295
Abstract
The ratio of electron‐impact cross sections of atomic and molecular hydrogen for production of uv radiation detected by an oxygen‐filtered iodine‐vapor‐filled photon counter has been precisely measured in a modulated beam experiment. Using a filter 1.67 cm long with an oxygen pressure of 1 atm, the ratio of cross sections at 100 eV was found to be 4.05 ± 0.07. Using the known cross section for production of Lyman‐alpha radiation from the hydrogen atom, the cross section for molecular radiation received by the detector was determined to be 1.48 (± 0.05) × 10−17 cm2.Keywords
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