Fig. 1. The expectation value of R vs. energy for ¹⁶O¹⁶O¹⁶O for states within 200 cm⁻¹ of the dissociation threshold. van der Waals (vdW) bound states (indicated by closed circles) are identified by values of R that are greater than or equal to the vdW minimum and main well states (indicated by closed squares) are identified by values of R that are close to the main well minimum value. The horizontal lines in the plot mark the location of these minima. States with expectation values near the barrier between the two minima are actually mixed states as described in detail in [17].

Fig. 2. Schematic for recombination process forming ¹⁸O¹⁶O¹⁶O and ¹⁶O¹⁶O¹⁸O and depicting the ΔZPE region as discussed in the text. In this figure, 16 represents ¹⁶O and 18 represents ¹⁸O.

Fig. 3. Calculated and experimental isotope ratio comparisons for ozone stabilization relative to 16 + 1616 rate. Results with and without including states in the ΔZPE region are denoted w/ΔZPE states and w/o ΔZPE states, as discussed in the text. Standard abbreviated notation is used, i.e., X + YX represents ^XO + ^YO^XO.

Comparison of energies (in cm⁻¹) of van der Waals eigenstates between this work and the previous benchmark calculations for the indicated isotopomers

ΔE is the difference between the present calculations and the benchmark ones.

Calculated stabilization ratios for the O-atom isotopomer combinations indicated by X + YZ, the number of van der Waals (vdW) states and their percent contributions to the stabilization probability with and without including states in ΔZPE regions as described in the text