Observation of Coulomb focusing of autoionization electrons produced in low-energy+He collisions
- 3 July 1989
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 63 (1) , 35-38
- https://doi.org/10.1103/physrevlett.63.35
Abstract
We report observation of a significant enhancement in the intensity of target and projectile autoionizing electrons produced in low-energy (2–15 keV) +He collisions. The target electron intensity is strongly peaked at 0° and confined to an angular range of ≊5° about the incident beam direction, while the projectile electron intensity shows a similar enhancement at 180°. We attribute this effect to Coulomb focusing, a new aspect of post-collision interaction which results from the deflection of the ejected electrons in the Coulomb field of the receding spectator ion.
Keywords
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