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 …

We report on laser cooling of a large fraction of positronium (Ps) in free flight by strongly
saturating the 1 3 S-2 3 P transition with a broadband, long-pulsed 243 nm alexandrite laser …

A powerful and robust control system is a crucial, often neglected, pillar of any modern,
complex physics experiment that requires the management of a multitude of different …

The formation of antihydrogen atoms from three-body collisions between positronium atoms
and antiprotons plays a crucial role in the gravitational behavior of antihydrogen at rest …

Positronium beam formation and manipulation are required in several fundamental
experiments. Efficient positron/positronium conversion in transmission configuration would …

The study of radioisotopes as well as of highly charged ions is a very active and dynamic
field. In both cases, the most sensitive probes involve species trapped in Penning or Paul …

Silicon nanochannel plates (NCPs) are employed in a variety of experiments as sources of
cold positronium (Ps) via positron to Ps conversion. Despite the widespread use of NCPs, no …

The J-PET detector, which consists of inexpensive plastic scintillators, has demonstrated its
potential in the study of fundamental physics. In recent years, a prototype with 192 plastic …

The production of clouds of positronium (Ps) in vacuum has opened the route for the
realization of precise spectroscopy measurements and new experiments with this exotic …

In this work we report on the systematic characterization of a rare-gas moderated
magnetically-transported continuous positron beam based on a 22 Na radioactive source …