Collisional cooling of internal rotation in MgH${}^{+}$ ions trapped with He atoms: Quantum modeling meets experiments in Coulomb crystals

L. González-Sánchez, R. Wester, F. A. Gianturco

Using the ab initio computed Potential Energy Surface (PES) for the electronic interaction of the MgH${}^{+}$ (${}^1\Sigma$) ion with the He(${}^1$S) atom, we calculate the relevant state-chang…