Low-velocity antiproton stopping power
- 15 December 1989
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 40 (17) , 11983-11985
- https://doi.org/10.1103/physrevb.40.11983
Abstract
The stopping power of antiprotons moving at low velocities through a uniform electron gas is calculated by making use of the momentum-transfer cross section. The static screening potential required is obtained from a self-consistent nonlinear screening calculation within density-functional theory. Our results indicate that the corrections beyond linear-response theory are particularly significant for negatively charged particles. We obtain, for example, a ratio of about two for the proton and antiproton stopping powers throughout the metallic density range.Keywords
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