Fine-structure transitions of Ne⁺, Ar⁺, Ne²⁺, and Ar²⁺ induced by collisions with atomic hydrogen

Fine-structure emission lines from atoms and ions are frequently observed in astronomy, providing valuable insights into astrophysical environments. To effectively utilize these spectra as diagnostic tools, it's essential to have collisional excitation and relaxation rate coefficients that detail interactions with surrounding particles. In this context, we provide our claculations on the cross sections and rate coefficients for fine-structure transitions of Ne⁺, Ar⁺, Ne²⁺, and Ar²⁺ in collisions with atomic hydrogen by using quantum-mechanical methods. The corresponding potential energies for these four systems are obtained by using the multireference configuration interaction Douglas-Kroll-Hess (MRCI-DKH) method with the augmented-correlation-consistent polarized valence 5-tuple zeta (aug-cc-pV5Z-dk) basis. The calculations presented in this study will be particularly valuable for investigations that rely on the interpretation of infrared emission lines as diagnostics in astrophysical contexts, such as planetary nebulae and star formation regions.