Positronium reflection and positronium beams

Details Positronium reflection and positronium beams Positronium reflection and positronium beams

Jan 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990nascp3058..137w&link_type=abstract

In NASA, Goddard Space Flight Center, Annihilation in Gases and Galaxies, NASA CP-3058 p 137-147 (SEE N90-18957 11-70)

Physics

Electron Beams, Electron Scattering, Positronium, Specular Reflection, Atomic Collisions, Atomic Energy Levels, Elastic Scattering, Electron Diffraction, Mean Free Path

Scientific paper

Specular reflection of positronium, Ps was observed and that there is adequate intensity at higher energies to make further study worthwhile was established. The scattering appears to be restricted to the outermost surface with a mean free path of (0.75 + or - 0.15)A for Ps in LiF(100). With a greater intensity Ps beam one should see higher order diffraction beams as the result of the periodicity of the surface. Ps diffraction thus offers the possibility of being a novel and valuable probe to study the outermost surface and to study adsorbants on it. Two methods for producing Ps beams are described.

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