2023/05/26 by Kévin Lévêque-Simon, Lévêque-Simon, K., A. Camper +9
Engineering · Physics and Astronomy · Chemical Engineering · #Muon and positron interactions and applications #Atomic and Molecular Physics #Ammonia Synthesis and Nitrogen Reduction
paper · pdf · doi:10.48550/arxiv.2305.17078
We present cross sections for the formation of positronium chloride (PsCl) in its ground state from the charge exchange between positronium (Ps) and chloride (Cl-) in the range of 10 meV - 100 eV Ps energy. We have used theoretical models based on the first Born approximation in its three-body formulation. We simulated the collisions between Ps and Cl- using ab-initio methods at both mean-field and correlated levels extrapolated to the complete basis set limit. We have investigated Ps excited states up to n=4. The results suggest that the channel Ps(n=2) is of particular interest for the production of PsCl in the ground state, and shows that an accurate treatment of the electronic correlation leads to a significant change in the global shape of the PsCl production cross section with respect to the mean-field level.