The rate of quenching of CO2(010) by O(³P) has been measured at room temperature by a temperature‐jump method. The rate constant value obtained is in good agreement with a previous room‐temperature measurement based on steady‐state analysis of a hollow‐cathode discharge in CO2. The results of fitting the room‐temperature result to trajectory calculations with a curve‐crossing (Nikitin) energy‐transfer mechanism lead to the conclusion that the quenching rate constant should increase only slowly with increasi
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