  The optimal kinematic parameters for the formation of the most stabilized
products in direct three-body recombination Cs+ + Br- + R ---> CsBr + R with R
= Hg, Xe, Kr are determined by the deformed polyhedron method for the third
body energy and the ion encounter energy ranging from 1 to 10 eV. The
stabilization effectivity functions are obtained for each atom, and the mean
effectivities of the atoms in the formation of products with the lowest
internal energy are calculated. The Xe and Hg atoms are almost equally
effective in energy removal from the recombining pair due to high hardness of
the repulsion potentials in the interactions of these atoms with the ions. The
Kr atom effectivity is much less because of much softer repulsion in the
corresponding pairwise interactions. The dynamical mechanism of the third body
collisions with the ions affects greatly the energy transfer effectiveness.
