Characterization of state-resolved transport for O+O2 collisions

Sharanya Subramaniam, Kelly A. Stephani

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


This work outlines a technique to obtain transport collision integrals within the state to state (StS) framework, from potential energy surfaces. This method is used to compute state-resolved collisional transport quantities for the O+O2 system, based on the Varandas and Pais potential energy surface (PES).1 The potential governing the interaction of O and O2 at different levels of vibrational excitation is extracted, and scattering angles are computed for each case. The scattering angles are then used to compute the transport cross-sections from which the StS O+O2 collision integrals may be obtained. The relative orientation between the atom and molecule is assumed to be fixed during a collision event, and collision integrals are averaged over all possible orientations. This work presents the StS diffusion cross-section as a function of relative translational energy. It is found that the scattering angles change significantly with vibrational excitation of O2. The nature of the variation is also influenced by the relative translational energy of the colliding particles.

Original languageEnglish (US)
Title of host publicationAIAA Aerospace Sciences Meeting
PublisherAmerican Institute of Aeronautics and Astronautics Inc, AIAA
ISBN (Print)9781624105241
StatePublished - 2018
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

ASJC Scopus subject areas

  • Aerospace Engineering


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