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 …

Positronium (Ps) is an exotic hydrogenic atom composed of an electron bound to a positron
via the Coulomb force. Being composed of two low-mass leptons, positronium is, for all …

We present a compilation of recommended positron–molecule cross sections for a range of
scattering processes including elastic scattering, vibrational excitation, discrete electronic …

This paper is a review of new developments in the experimental field of the efficient
emission of the positronium negative ion, a bound state of one positron and two electrons …

Much progress in the theory of positron scattering on atoms has been made in the ten years
since the review of Surko et al (2005 J. Phys. B: At. Mol. Opt. Phys. 38 R57). We review this …

We present a critical analysis of available experimental and theoretical cross section data for
positron scattering from atomic systems. From this analysis, we present (where data are …

Photodetachment of the positronium negative ion, a bound state of one positron and two
electrons, has been observed. Development of a method to produce the ions efficiently …

Experimental and theoretical progress in the field of antiproton-impact-induced ionization of
atoms and molecules is reviewed. We describe the techniques used to measure ionization …

We describe an experimental arrangement suitable for performing microwave spectroscopy
measurements of the positronium (Ps) n= 2 fine structure using Ramsey interferometry …

We report here the production of an energy-tunable monoenergetic positronium beam using
photodetachment of the positronium negative ion, a bound state of one positron and two …