Departure from velocity proportionality in low-energy electronic stopping
- 1 March 1993
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review A
- Vol. 47 (3) , 2393-2394
- https://doi.org/10.1103/physreva.47.2393
Abstract
A recent paper by Golser and Semrad [Phys. Rev. Lett. 66, 1831 (1991)] showed a departure from velocity proportionality in their energy-loss measurement of a hydrogen projectile in the gas below 20 keV. We point out that their result is a consequence of complex collision dynamics that is common in the molecular regime and has been known for some time among atomic physicists. The observation is well reproduced by a compilation of published stopping cross sections.Keywords
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