2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/82383The Coulomb deexcitation of light exotic atoms in collisions with hydrogen atoms has been studied in the framework of the fully quantum-mechanical close-coupling method for the first time. The calculations of the $l$-averaged cross sections have been performed for $(μp)_n$ and $(μd)_n$ atoms in the states with the principal quantum number $n=3 ÷8$ and relative energies region $E=0.01 ÷100$ eV. The obtained results reveal the new $n$ and $E$ dependences of the Coulomb deexcitation cross sections. The large fraction (up to $\sim$ 36%) of the transition with $Δn > 1$ is also predicted.13 pages, Latex, 6 Figures, corrected typosNuclear Theorytext