Fig. 3: Reaction mechanism.
From: Enhancing reactivity of SiO+ ions by controlled excitation to extreme rotational states
a Energetics (in eV) of the ground state reaction pathways for the SiO+ + H2 reaction. Yellow line represents the dominant reaction pathway, via a submerged saddle point TS1. b Contours of the PES in reactant Jacobi coordinates along R and θ2 with fixed θ1 = 180o and optimized rSiO, rHH, and ϕ. c Comparison of integral cross sections for rotational excitation of SiO+, rotational excitation of H2, and translational excitation.
