Three-Body Recombination Between Helium and Silver Atoms at Cold Collision Energies

Cold three-body recombination between helium and silver atoms is studied using hyperspherical coordinates. The three-body Schrodinger equation, represented in the slow variable discretization approach at short distances and in the adiabatic method at large distances and using the potential-energy surface represented as the addition of realistic He-He and He-Ag pair interaction potentials, is solved using the R-matrix propagation method, in order to numerically calculate the three-body recombination rates for the He+He+Ag -> He2+Ag and He+He+Ag -> HeAg+He processes. Not only zero-angular momentum J = 0 states but also J > 0 states are considered in the calculations, allowing for treating the recombination processes at collision energies beyond the threshold regime. The results of our calculations will be presented and discussed.