Redistribution of vibrational energy: Mechanisms and transition probabilities

Maninder S. Grover, Thomas E. Schwartzentruber

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Scopus citations


In this paper we present a molecular level study analyzing vibrational energy redistribution in a reacting nitrogen system due to N2 + N collisions, N2 + N exchange reactions, N2 +N2 collisions and N2 +N2 exchange reactions at T = 30000K, T = 20000K and T = 10000K. We see that probability distribution functions describing vibrational energy change due to N2 + N and N2 + N2 collisions collisions peak at ∆ɛvib = 0eV and have a narrow distribution. We find that the probability distribution functions describing change in vibrational energy due to N2 + N and N2 + N2 exchange reactions have a larger width than the probability distribution functions for collisions, indicating that exchange reactions are more efficient in redistributing vibrational energy than collisions. We also find that exchange reactions that cause a change in vibrational energy are likely to change the vibrational level of the the reaction product by multiple vibrational quantum levels when compared to the reactant. On the other hand collisions are more likely to change the vibrational quantum number by one.

Original languageEnglish (US)
Title of host publicationAIAA Aerospace Sciences Meeting
PublisherAmerican Institute of Aeronautics and Astronautics Inc, AIAA
ISBN (Print)9781624105241
StatePublished - 2018
Externally publishedYes
EventAIAA Aerospace Sciences Meeting, 2018 - Kissimmee, United States
Duration: Jan 8 2018Jan 12 2018

Publication series

NameAIAA Aerospace Sciences Meeting, 2018


OtherAIAA Aerospace Sciences Meeting, 2018
Country/TerritoryUnited States

Bibliographical note

Funding Information:
The research presented is supported by Air Force Office of Scientific Research (AFOSR) under Grant No. FA9550-16-1-0161. The views and conclusions contained herein are those of the authors and should not be interpreted as necessarily representing the official policies or endorsements, either expressed or implied, of the AFOSR or the US government.

Publisher Copyright:
© 2018 by the American Institute of Aeronautics and Astronautics, Inc. All rights reserved.


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