Convergent close-coupling calculations of electron scattering on HeH+

Abstract

We use the molecular convergent close-coupling (MCCC) method to perform calculations of 10--1000 eV electron scattering on the ground state of ${\mathrm{HeH}}^{+}$. Cross sections are presented for excitation of the $n=2\ensuremath{-}3$ singlet and triplet states (where $n$ is the united-atoms-limit principle quantum number), as well as ionization. We also present cross sections for ${\mathrm{He}}^{+}$ and ${\mathrm{H}}^{+}$ ion production following dissociative excitation and ionization. The ${\mathrm{He}}^{+}$ production cross section is compared with the measurements of Lecointre, Jureta, Urbain, and Defrance [J. Lecointre, J. J. Jureta, X. Urbain, and P. Defrance, J. Phys. B At. Mol. Opt. Phys. 47, 015203 (2014)]. We find that the MCCC results are up to 30% higher than experiment.