Measurement of the fourth O-H overtone absorption cross section in acetic acid using cavity ring-down spectroscopy

ORAL

Abstract

We report the measured absorption cross sections of the fourth vibrational O-H overtone in acetic acid using cavity ring-down spectroscopy. The cross sections enable the calculation of the reaction rate $J$ for O-H overtone initiated reactions, such as dissociation and decarboxylation. The contributions to the acetic acid spectrum from the monomer and dimer have been separated. The absorption of acetic acid monomer peaks at about 615 nm and has a peak cross section of 1.84$\times $10$^{-24}$ cm$^{2}$molecule$^{-1}$. Between 612 and 620 nm, the integrated cross section for the acetic acid monomer is (5.23$\pm $0.73)$\times $10$^{-24}$ cm$^{2}$molecule$^{-1}$nm or (1.38$\pm $0.19)$\times $10$^{-22}$ cm$^{2}$molecule$^{-1}$cm$^{-1}$

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Authors

  • Solomon Bibilign

    Department of Physics, North Carolina A\&T State University

  • Philip Adams

    Department of Physics and Astronomy, Louisiana State University, ORNL, UT, ORNL/UT, UK, LSU, Louisiana State University, Zhejiang Normal University, Center for Computation and Technology, Louisiana State University, University of Tuebingen, Germany, Aristotle University of Thessaloniki, Greece, Max Planck Institute for Astrophysics, Max Plank Institute for Astrophysics, Laboratoire d'Astrophysique de Marseille, Albert Einstein Institute, California Institute of Technology, Dept. of Physics \& Astronomy, Louisiana State University, Baton Rouge, LA 70803, Dept. of Physics \& Astronomy, Louisiana State Univ., Baton Rouge, LA 70803, NASA Marshall Space Flight Center, Dept. of Physics \& Astronomy, Louisiana State University, Ohio State University, Wright State University, Department of Physics, North Carolina A\&T State University, Clark Atlanta University, Department of Electrical and Computer Engineering, Pennsylvania State University, University Park, P, Princeton University, University of New Orleans, Alabama A\&M University, Vanderbilt Univ., Konstanz Univ., Isik Univ., Department of Physics, Yale University

  • Philip Adams

    Department of Physics and Astronomy, Louisiana State University, ORNL, UT, ORNL/UT, UK, LSU, Louisiana State University, Zhejiang Normal University, Center for Computation and Technology, Louisiana State University, University of Tuebingen, Germany, Aristotle University of Thessaloniki, Greece, Max Planck Institute for Astrophysics, Max Plank Institute for Astrophysics, Laboratoire d'Astrophysique de Marseille, Albert Einstein Institute, California Institute of Technology, Dept. of Physics \& Astronomy, Louisiana State University, Baton Rouge, LA 70803, Dept. of Physics \& Astronomy, Louisiana State Univ., Baton Rouge, LA 70803, NASA Marshall Space Flight Center, Dept. of Physics \& Astronomy, Louisiana State University, Ohio State University, Wright State University, Department of Physics, North Carolina A\&T State University, Clark Atlanta University, Department of Electrical and Computer Engineering, Pennsylvania State University, University Park, P, Princeton University, University of New Orleans, Alabama A\&M University, Vanderbilt Univ., Konstanz Univ., Isik Univ., Department of Physics, Yale University