Rate Constant for the Reaction Na + O₂ + N₂ → NaO₂ + N₂ Under Mesospheric Conditions

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Article on the rate constant for the reaction Na + O₂ + N₂ → NaO₂ + N₂.

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7 p.

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Husain, David; Marshall, Paul & Plane, John M. C. January 1986.

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Article on the rate constant for the reaction Na + O₂ + N₂ → NaO₂ + N₂.

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7 p.

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Abstract: Measurement of the absolute third-order rate constant kR for the reaction constituting the major sink for atomic sodium under mesospheric conditions, namely Na + O2 + N2 → NaO2 + N2, has been extended to lower temperatures (415 – 1016 K) by the method of time-resolved atomic resonance spectroscopy at λ = 589 nm (Na(3 2PJ) ← Na(3 2S)). This has facilitated extrapolation of the measured rate data over a wide temperature range using the Tröe formalism of unimolecular rate theory to the temperature of the 90 km region, namely about 200 K. For the range T = 200 – 2000 K, kR (cm6 molecule−2 s−1) can then be fitted to the expression ln kR = −0.3225(ln T)2 + 2.133 ln T −69.211 The resulting value of kR(200 K) is found to be about three times greater than expected on the basis of recent measurements derived from atomic-laser-induced fluorescence experiments using a fast flow reactor, further substantiating the role of NaO2 as a major sink.

© 1986 Elsevier Sequoia/ Printed in The Netherlands.

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  • Journal of Photochemistry, 1986, Amsterdam: Elsevier Sequoia SA (Lausanne), pp. 1-7

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  • Publication Title: Journal of Photochemistry
  • Volume: 32
  • Issue: 1
  • Page Start: 1
  • Page End: 7
  • Pages: 7
  • Peer Reviewed: Yes

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  • January 1986

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  • Jan. 22, 2015, 9:04 a.m.

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Husain, David; Marshall, Paul & Plane, John M. C. Rate Constant for the Reaction Na + O₂ + N₂ → NaO₂ + N₂ Under Mesospheric Conditions, article, January 1986; [Amsterdam, Netherlands]. (digital.library.unt.edu/ark:/67531/metadc488152/: accessed November 13, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT College of Arts and Sciences.