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Dodson LG, Shen L, Savee JD, et al. VUV photoionization cross sections of HO2, H2O2, and H2CO. J Phys Chem A. 2015;119(8):1279-91doi: 10.1021/jp508942a.
Dodson, L. G., Shen, L., Savee, J. D., Eddingsaas, N. C., Welz, O., Taatjes, C. A., Osborn, D. L., Sander, S. P., & Okumura, M. (2015). VUV photoionization cross sections of HO2, H2O2, and H2CO. The journal of physical chemistry. A, 119(8), 1279-91. https://doi.org/10.1021/jp508942a
Dodson, Leah G, et al. "VUV photoionization cross sections of HO2, H2O2, and H2CO." The journal of physical chemistry. A vol. 119,8 (2015): 1279-91. doi: https://doi.org/10.1021/jp508942a
Dodson LG, Shen L, Savee JD, Eddingsaas NC, Welz O, Taatjes CA, Osborn DL, Sander SP, Okumura M. VUV photoionization cross sections of HO2, H2O2, and H2CO. J Phys Chem A. 2015 Feb 26;119(8):1279-91. doi: 10.1021/jp508942a. Epub 2015 Feb 10. PMID: 25621533.
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J Phys Chem A. 2015 Feb 26;119(8):1279-91. doi: 10.1021/jp508942a. Epub 2015 Feb 10.

VUV photoionization cross sections of HO2, H2O2, and H2CO.

The journal of physical chemistry. A

Leah G Dodson, Linhan Shen, John D Savee, Nathan C Eddingsaas, Oliver Welz, Craig A Taatjes, David L Osborn, Stanley P Sander, Mitchio Okumura

Affiliations

  1. Division of Chemistry and Chemical Engineering and §NASA Jet Propulsion Laboratory, California Institute of Technology , Pasadena, California 91125, United States.

PMID: 25621533 DOI: 10.1021/jp508942a

Abstract

The absolute vacuum ultraviolet (VUV) photoionization spectra of the hydroperoxyl radical (HO2), hydrogen peroxide (H2O2), and formaldehyde (H2CO) have been measured from their first ionization thresholds to 12.008 eV. HO2, H2O2, and H2CO were generated from the oxidation of methanol initiated by pulsed-laser-photolysis of Cl2 in a low-pressure slow flow reactor. Reactants, intermediates, and products were detected by time-resolved multiplexed synchrotron photoionization mass spectrometry. Absolute concentrations were obtained from the time-dependent photoion signals by modeling the kinetics of the methanol oxidation chemistry. Photoionization cross sections were determined at several photon energies relative to the cross section of methanol, which was in turn determined relative to that of propene. These measurements were used to place relative photoionization spectra of HO2, H2O2, and H2CO on an absolute scale, resulting in absolute photoionization spectra.

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