%0 Journal Article
%T Scattering processes in antiprotonic hydrogen - hydrogen atom collisions
%A V. P. Popov
%A V. N. Pomerantsev
%J Physics
%D 2005
%I arXiv
%X The elastic scattering, Stark transitions and Coulomb deexcitation of excited antiprotonic hydrogen atom in collisions with hydrogenic atom have been studied in the framework of the fully quantum-mechanical close-coupling method for the first time. The total cross sections $\sigma_{nl \to n'l'}(E)$ and averaged on the initial angular momentum $l$ cross sections $\sigma_{n\to n'}(E)$ have been calculated for the initial states of $(\bar{p}p)_{n}$ atoms with the principal quantum number $n=3 - 14 $ and at the relative energies $E=0.05 - 50$ eV. The energy shifts of the $ns$ states due to the strong interaction and relativistic effects are taken into account. Some of our results are compared with the semiclassical calculations.
%U http://arxiv.org/abs/nucl-th/0512107v2