Ubiquitous diffraction resonances in positronium formation from fullerenes

Abstract

Due to the dominant electron capture by positrons from the molecular wall and the spatial dephasing across the wall-width, a powerful diffraction effect universally underlies the positronium (Ps) formation from fullerenes. This results into trains of resonances in the Ps formation cross section as a function of the positron beam energy, producing uniform structures in recoil momenta in analogy with classical single-slit diffraction fringes in the configuration space. The prediction opens a hitherto unknown avenue of Ps spectroscopy with nanomaterials.

6 pages, 3 figures, submitted

References in corpus (5)

• Precision Study of Positronium: Testing Bound State QED Theory
• Recent progress in the description of positron scattering from atoms using the Convergent Close-Coupling Theory
• Photoabsorption by Volume Plasmons in Metal Nanoclusters
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Cited by in corpus (2)

• Molecular size effects on diffraction resonances in positronium formation from fullerenes
• Imaging atomic scattering potential in centroidal diffraction of elastic electrons