Abstract
Quantum chemical results for the lowest four potentials of the HeH molecule and the corresponding rotational and radial nonadiabatic coupling matrix elements are reported. Close-coupling calculations of the integral cross sections for the excitation processes $\mathrm{H}(1s)+\text{He}\ensuremath{\rightarrow}\phantom{\rule{4pt}{0ex}}\mathrm{H}(2s,2p)+\text{He}$ are performed on this basis. The calculated cross sections are in a reasonable agreement with the experimental data.
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