Determination of the internal state distribution of NO(X2Π) produced in the O(3P) + NH(X3Σ-) reaction

Article abstract of DOI:10.1063/1.463606

The internal state distribution of the NO product from the O(³P) + NH(X³Σ^-) reaction has been determined from a laser fluorescence experiment in a cell at a total pressure of 60 m Torr.The O atom and the NH reagents were prepared in a microwave discharge in oxygen and by the two-photon 193 nm photolysis of ammonia, respectively.The NO product was observed in the vibrational levels v = 1-8 by laser fluorescence excitation in A²Σ⁺-X²Π bands.The nascent vibrational state distribution was found to be monotonically decreasing vs increasing v.The v = 1 rotational state distribution, extrapolated back to zero photolysis-probe delay, could be parametrized as a 1130 +/- 50 K Boltzmann distribution.Very little of the available energy is found as internal excitation of the NO product.The O + NH -> H + NO reaction is expected to proceed by the formation and decay of a short-lived HNO complex.The observed NO vibrational state distribution is interpreted in terms of a Franck-Condon model involving the overlap of vibrational wave functions for the O stretch coordinate in the HNO complex with those for vibration in the free NO product.The O rotational state distribution is governed largely by kinematic constraints in this H + HL -> HH + L reaction, where H and L are heavy and light atoms, respectively.

Full text of DOI:10.1063/1.463606

Determination of the internal state distribution of NO(X 2Π) produced in the O(3
P)+NH(X 3Σ−) reaction
YuLin Huang and Paul J. Dagdigian
Citation: The Journal of Chemical Physics 97, 180 (1992); doi: 10.1063/1.463606
View online: http://dx.doi.org/10.1063/1.463606
View Table of Contents: http://scitation.aip.org/content/aip/journal/jcp/97/1?ver=pdfcov
Published by the AIP Publishing
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This article is copyrighted as indicated in the article. Reuse of AIP content is subject to the terms at: http://scitation.aip.org/termsconditions. Downloaded to IP:
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This article is copyrighted as indicated in the article. Reuse of AIP content is subject to the terms at: http://scitation.aip.org/termsconditions. Downloaded to IP:
132.206.7.165 On: Mon, 24 Nov 2014 15:52:03

This article is copyrighted as indicated in the article. Reuse of AIP content is subject to the terms at: http://scitation.aip.org/termsconditions. Downloaded to IP:
132.206.7.165 On: Mon, 24 Nov 2014 15:52:03

This article is copyrighted as indicated in the article. Reuse of AIP content is subject to the terms at: http://scitation.aip.org/termsconditions. Downloaded to IP:
132.206.7.165 On: Mon, 24 Nov 2014 15:52:03

This article is copyrighted as indicated in the article. Reuse of AIP content is subject to the terms at: http://scitation.aip.org/termsconditions. Downloaded to IP:
132.206.7.165 On: Mon, 24 Nov 2014 15:52:03

This article is copyrighted as indicated in the article. Reuse of AIP content is subject to the terms at: http://scitation.aip.org/termsconditions. Downloaded to IP:
132.206.7.165 On: Mon, 24 Nov 2014 15:52:03

This article is copyrighted as indicated in the article. Reuse of AIP content is subject to the terms at: http://scitation.aip.org/termsconditions. Downloaded to IP:
132.206.7.165 On: Mon, 24 Nov 2014 15:52:03