Near-threshold collisional dynamics in the system

HB Ambalampitiya, J Stallbaumer, II Fabrikant… - Physical Review A, 2023 - APS
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 …

Laser-assisted radiative recombination in a cold hydrogen plasma

II Fabrikant, HB Ambalampitiya - Journal of Physics B: Atomic …, 2024 - iopscience.iop.org
We study the process of laser-assisted radiative recombination of an electron with a proton
in a cold hydrogen plasma employing the semiclassical Kramers' approach which involves …

Antiproton collisions with excited positronium

M Charlton, HB Ambalampitiya, II Fabrikant, I Kalinkin… - Physical Review A, 2023 - APS
We present results of calculations of several processes resulting from positronium (Ps)
collisions with antiprotons: antihydrogen formation, Ps breakup, and n Ps-changing …

Laser-assisted positronium formation in positron collisions with Rydberg hydrogen

MK Matfunjwa, HB Ambalampitiya, II Fabrikant - Physical Review A, 2025 - APS
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 …