Mutual neutralization in He+ + H- collision at energy below 25 meV and isotope effect
Document Type
Other
Publication Date
Winter 3-5-2024
Abstract
At collision energy below 25 meV, our branching ratios of the mutual neutralization in He+ + H- and He+ + D- collisions measured with the single-pass merged beam setup at the Université catholique de Louvain in Belgium benchmark a Landau-Zener model that uses potential energy curves and couplings computed by an anion-centered asymptotic method. In addition, we identified a low collision energy regime (50 meV and below) where these branching ratios, at first order, no longer depend on the collision energy. Moreover, we deduced that the mutual neutralization of heavier isotopes tends to populate higher excited states than lighter isotopes do, as a result of the reduced radial velocity at the avoided crossings.
Recommended Citation
Andrianarijaona, Vola; Dochain, Arnaud; and Urbain, Xavier, "Mutual neutralization in He+ + H- collision at energy below 25 meV and isotope effect" (2024). Faculty Works. 38.
https://knowledge.e.southern.edu/facworks_physics/38