论文信息 - Elastic positron-helium scattering near the positronium formation threshold

Elastic positron-helium scattering near the positronium formation threshold

Measurements of that part of the total positron-helium cross section not associated with positronium formation have been made for positron energies between 14 and 28 eV. The experimental results do not support the existence of a cusp in the elastic scattering cross section at the positronium formation threshold energy (17.8 eV) as significant as that previously deduced by Campeanu et al. (1987).

M. Charlton | K. Johnston | A. Goodyear | P. Coleman | A. Cox

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