Positronium is the simplest bound state, built of an electron and a positron. Studies of
positronium in vacuum and its decays in medium tell us about quantum electrodynamics …

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 …

The field of experimental positronium physics has advanced significantly in the last few
decades, with new areas of research driven by the development of techniques for trapping …

Within the last decade powerful methods have been developed to study surfaces using
bright low-energy positron beams. These novel analysis tools exploit the unique properties …

When laser radiation is skilfully applied, atoms and molecules can be cooled,–, allowing the
precise measurements and control of quantum systems. This is essential for the fundamental …

The structure of silicene fabricated on a Ag (111) surface was determined using reflection
high-energy positron diffraction with a linac-based brightness-enhanced intense positron …

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 …

Experimental generation of ultrashort MeV positron beams with high intensity and high
density using a compact laser-driven setup is reported. A high-density gas jet is employed …

Abstract For the GBAR (Gravitational Behaviour of Antihydrogen at Rest) experiment at
CERN's Antiproton Decelerator (AD) facility we have constructed a source of slow positrons …

Total-reflection high-energy positron diffraction (TRHEPD) has recently been developed to
investigate the surface structure (atomic geometry) and surface properties of materials. It is …