The low-energy dependence of the differential cross section for elastic scattering in e+-Ar is found to be broadly consistent with previous absolute measurements. Among theories, the dependence follows more closely the results of a coupled-channel R-matrix approach, indicating the influence of Ps formation and, possibly, positron impact excitation on the elastic scattering channel.
|Journal||Journal of Physics B: Atomic, Molecular and Optical Physics|
|Publication status||Published - Dec 28 1999|
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics
- Condensed Matter Physics