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Quantum Dynamics of the 17O + 32O2 Collision Process
Grégoire Guillon1,2, Pascal Honvault1,2
1Laboratoire Interdisciplinaire Carnot de Bourgogne, UMR CNRS 6303, Université de Bourgogne Franche-Comté , 21078 Dijon, France.
The Journal of Physical Chemistry. A
|October 8, 2016
Summary
This study presents the first quantum scattering analysis of the 17O + 32O2 reaction, comparing it with 18O + 32O2 collisions. Results show similar trends but unique behaviors for 17O, relevant to atmospheric chemistry puzzles.
Area of Science:
- Chemical kinetics
- Quantum scattering theory
- Atmospheric chemistry
Background:
- The mass-independent fractionation (MIF) of isotopes in ozone remains a significant puzzle in atmospheric chemistry.
- Understanding isotopic effects in oxygen reactions is crucial for interpreting atmospheric data.
Purpose of the Study:
- To perform the first quantum scattering study of the 17O + 32O2 reactive process.
- To compare the reaction dynamics of 17O + 32O2 with 18O + 32O2 collisions.
- To investigate the role of rare oxygen isotopes in atmospheric processes.
Main Methods:
- Full quantum integral and differential cross sections calculations.
- Rate constant determination for the 17O + 32O2 reaction.
- Comparative analysis with existing 18O + 32O2 collision data.
Main Results:
- Calculated integral and differential cross sections and rate constants for 17O + 32O2.
- Observed general trends similar to 18O + 32O2 reactions.
- Identified unique behaviors for 17O, especially at low collision energies.
Conclusions:
- The 17O + 32O2 reaction dynamics share similarities with 18O + 32O2, offering insights into isotopic fractionation.
- Specific behaviors of the 17O isotope at low energies may provide new clues to the ozone MIF puzzle.
- This study establishes a quantum scattering baseline for the 17O + 32O2 system.
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