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Vibrational and rotational quenching of CO by collisions with H, He, and H2Collisional quenching of molecular species is an important process in a variety of astrophysical environments including interstellar clouds, photodissociation regions, and cool stellar/planetary atmospheres. In this work, quantum mechanical scattering calculations are presented for the rotational and vibrational relaxation of rotationally-excited CO due to collisions with H, He and H2 for collision energies between 10(exp -6) and approx.15000/cm. The calculations were performed using the close-coupling approach and the l-labeled form of the coupled-states approximation. Cross sections and rate coefficients for the quenching of the v=0-2, j=0-6 levels of CO are presented and comparisons with previous calculations and measurements, where available, are provided.
Document ID
20060052459
Acquisition Source
Ames Research Center
Document Type
Conference Paper
Authors
Yang, Benhui (Georgia Univ. Athens, GA, United States)
Stancil, P. C. (Georgia Univ. Athens, GA, United States)
Balakrishnan, N. (Nevada Univ. Las Vegas, NV, United States)
Forrey, R. C. (Pennsylvania State Univ. Reading, PA, United States)
Date Acquired
August 23, 2013
Publication Date
August 1, 2006
Publication Information
Publication: Proceedings of the NASA Laboratory Astrophysics Workshop
Subject Category
Astrophysics
Funding Number(s)
CONTRACT_GRANT: NSF PHY-02-45019
CONTRACT_GRANT: NNG05GM59G
CONTRACT_GRANT: NSF PHY-02-44066
Distribution Limits
Public
Copyright
Public Use Permitted.

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