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

Hiroya Suno

Jesús Pérez‐Ríos, Steve Ragole, Wang Jia +1 more

Hiroya Suno, Brett D. Esry, Chris H. Greene +1 more

James Sternberg, J. H. Macek

Hiroya Suno

We study three-body recombination in the helium-helium-silver system at cold collision energies. The three-body Schr\"odinger equation is solved combining the slow variable discretization and adiabatic approaches with the $R$-matrix propagation method, in order to calculate the product-state-selective total and partial recombination rates in the $^{4}\mathrm{He}+^{4}\mathrm{He} +$ Ag system. Recombination at collision energies less than 10 mK is found to take place dominantly to the product molecule $^{4}\mathrm{He}\mathrm{Ag}$ in its least bound state, while the three atoms recombine mainly to the $^{4}\mathrm{He}_{2}$ molecule in its ground state at higher collision energies.

Hiroya Suno

Abstract Three-body recombination (TBR) of helium atoms at cold collision energies is studied using the hyperspherical adiabatic method with different realistic interaction potentials. By considering zero angular momentum J = 0 states as well as J > 0 states, we calculate the 4He TBR rates up to about 0.1 Kelvin, and analyze the influence of modern potentials on the recombination rates. We also calculate and analyze the collision induced dissociation rates.