In recent years, there has been a wealth of new science involving low-energy antimatter (ie,
positrons and antiprotons) at energies ranging from 10 2 to less than 10-3 eV. Much of this …

This article presents an overview of current understanding of the interaction of low-energy
positrons with molecules with emphasis on resonances, positron attachment, and …

Quantum chemical calculations of the ground-state properties of positron-molecule
complexes are challenging. The main difficulty lies in employing an appropriate basis set for …

This paper is a review of low-energy positron interactions with atoms and molecules.
Processes of interest include elastic scattering, electronic and vibrational excitation …

Publisher Summary This chapter discusses resonance and threshold phenomena in low-
energy electron collisions with molecules and clusters. Low-energy collisions of electrons …

Progress in the ability to accumulate and cool positrons and antiprotons is enabling new
scientific and technological opportunities. The driver for this work is plasma physics research …

Enhanced positron annihilation on polyatomic molecules is a long-standing and complex
problem. We report the results of calculations of resonant positron annihilation on methyl …

Positron annihilation on many molecular species occurs via capture into vibrational
Feshbach resonances. The study of the downshifts in the energy of these resonances from …

A model-potential approach to calculating positron-molecule binding energies and
annihilation rates is developed. Unlike existing ab initio calculations, which have mostly …

A model-potential method is employed to calculate binding, elastic scattering, and
annihilation of positrons for a number of atoms and small nonpolar molecules, namely, Be …