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 …

Antihydrogen atoms with K or sub-K temperature are a powerful tool to precisely probe the
validity of fundamental physics laws and the design of highly sensitive experiments needs …

Advances in positron trapping techniques have made it possible to perform the first electron-
positron plasma experiments in a laboratory. An electron-positron beam-plasma system is …

Positrons (ie, antielectrons) find use in a wide variety of applications, and antiprotons are
required for the formation and study of antihydrogen. Available sources of these antiparticles …

We report the application of evaporative cooling to clouds of trapped antiprotons, resulting in
plasmas with measured temperature as low as 9 K. We have modeled the evaporation …

Adiabatic cooling is shown to be a simple and effective method to cool many charged
particles in a trap to very low temperatures. Up to 3× 10 6 p¯ are cooled to 3.5 K—10 3 times …

We describe a multi-step “rotating wall” compression of a mixed cold antiproton–electron
non-neutral plasma in a 4.46 T Penning–Malmberg trap developed in the context of the …

We present the results of an experiment to search for trapped antihydrogen atoms with the
ALPHA antihydrogen trap at the CERN Antiproton Decelerator. Sensitive diagnostics of the …

This paper discusses thermal equilibrium states of single-species plasmas, such as pure
electron plasmas and pure positron plasmas, that are confined in a dipole trap. Thermal …

Antiprotons created by laser ionization of antihydrogen are observed to rapidly escape the
ALPHA trap. Further, positron plasmas heat more quickly after the trap is illuminated by laser …