The classical theory of ion‐ion recombination in gases of high density is extended to allow for arbitrary ratios of the masses of the three species involved. Calculations are performed for the recombination of Ar+, Ar+ 2, Kr+, and Kr+ 2 ions with F− and of Hg+ and Ar+ with Cl− in an argon gas. The effective two‐body rates peak between 2×10−6 and 3×10−6 cm3 sec−1 at pressures above 1 atm.
Wadehra JM and Bardsley JN. Calculations of ion‐ion recombination rates at high pressures. Appl. Phys. Lett. 1978;32(1);76-78. doi: 10.1063/1.89846