Abstract
The evolution of the early Universe is influenced by atomic and molecular processes involving primarily atoms, ions and molecules of H, He and Li. Not all of these reactions have been thoroughly investigated [1].
We focus on the description of as- sociative detachment (AD) in the Li- and H collision within the nonlocal resonant theory [2]. The presented study complements our earlier investigation of the AD pro- cess of Li and H- [3].
These reactive collisions contribute to the formation of the LiH molecule in the early Universe. We constructed three different nonlocal models that are consistent with ab initio data - potential energy curves of LiH and LiH-obtained from MRCI calculations and eigenphase sums of electron-LiH scattering computed by the R-matrix method.
We discuss the total cross section and the comparison with the Li and H- collision. Our results weakly depend on the used nonlocal model at collision energies up to 1 eV. [1] S.
Lepp, P. C.
Stancil, A. Dalgarno, J.
Phys. B 35, R57 (2002) [2] W.
Domcke, Phys. Rep. 208(2), 97 (1991) [3] M. Čıžek, J.
Dvořák, K. Houfek, Eur.
Phys. J.
D 72, 66 (2018)