Retardation Effects in Very Low-Energy Helium-Helium Scattering
- 10 January 1972
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 28 (2) , 74-76
- https://doi.org/10.1103/physrevlett.28.74
Abstract
The elastic differential and total helium-helium scattering cross sections are computed at very low energies. Retardation effects, which are accurately taken into account by using the arc tangent approximation to the Casimir-Polder potential, are shown to contribute several percent to the cross sections.Keywords
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