TY - GEN
T1 - Characterization of state-resolved transport for O+O2 collisions
AU - Subramaniam, Sharanya
AU - Stephani, Kelly A.
N1 - Funding Information:
This work was supported by an Early Career Faculty grant from NASA’s Space Technology Research Grants Program. The first author also acknowledges support from the Amelia Earhart Fellowship received from the Zonta International Foundation.
Publisher Copyright:
© 2018 by the American Institute of Aeronautics and Astronautics, Inc. All rights reserved.
Copyright:
Copyright 2018 Elsevier B.V., All rights reserved.
PY - 2018
Y1 - 2018
N2 - 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.
AB - 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.
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U2 - 10.2514/6.2018-1484
DO - 10.2514/6.2018-1484
M3 - Conference contribution
AN - SCOPUS:85044566750
SN - 9781624105241
T3 - AIAA Aerospace Sciences Meeting, 2018
BT - AIAA Aerospace Sciences Meeting
PB - American Institute of Aeronautics and Astronautics Inc, AIAA
T2 - AIAA Aerospace Sciences Meeting, 2018
Y2 - 8 January 2018 through 12 January 2018
ER -