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. 2025 Jun 25;125(14):6609–6652. doi: 10.1021/acs.chemrev.4c01014

8. Comparison of Collision Complex Lifetimes Determined via Quantum RRKM Theory τ quant and Classical Trajectory Simulations τ̅ ct for Triatomic Collision Systems .

System τquant [ns] τ̅ct [ns]
Li + Li2 2.4 12 ± 1
K + K2 146 303 ± 36
Cs + Cs2 2746 2871 ± 328
a

The quantum and classical lifetimes agree to within one standard deviation for Cs + Cs2, with greater deviation observed for Li + Li2 and Cs + Cs2. Adapted table with permission from James F. E. Croft and John L. Bohn, Physical Review A, 89, 1, 012714, 2014. Copyright 2014 by the American Physical Society.