We study e+-H (n) and Ps (n)-p collisions near the three-body breakup threshold and
thresholds for the charge-transfer processes. We show that classical trajectory Monte Carlo …

We consider positronium formation in collisions of positrons with excited hydrogen atoms H
(n) in an infrared laser field theoretically. This process is assisted by the dipolar focusing …

We investigate the formation of positronium (Ps) in the presence of a linearly polarized
infrared laser field, via the collision of positrons with Rydberg hydrogen atoms H (n H) where …

The positron-hydrogen collision system is considered with the one-and two-centre
convergent close-coupling methods with a particular focus on initial excited states. The …