Laser-initiated half-reaction. Vibrational and rotational state distribution of NO produced from the reactant pair O(1D)*N2O

Article abstract of DOI:10.1063/1.454687

The vibrational and rotational state distribution was measured for NO produced from the reaction O(₁D) + N2O -> 2NO via a reactant pair O(₁D)*N2O, which, in turn, formed by the 193 nm photolysis of the N2O dimer.The dimer was generated by the supersonic expansion through a pulsed nozzle.The distribution was determined by using the laser-induced Huorescence of NO on its A-X transition.The rotational distribution was of the Boltzmann type characterized by a low temperature, 60-100 K, at each vibrational level measured.The vibrational distribution was found to be composed of the two components, one very cold and the other relatively hot.The experiment using an isotopically labeled N2O revealed that the vibrational energy was not equally distributed over two kinds of NO; the NO originally present in N2O was vibrationally cool while that formed from O(₁D) and the terminal nitrogen of Nz0 was vibrationally hot.These results indicate that the reaction occurring is the abstraction of the terminal nitrogen by O(₁D).The low rotational temperature, which sharply contrasts with the extremely high rotational excitation observed for the ordinary bimolecular reaction, can be rationalized by considering the geometrical difference in the encounter between the O(₁D) atom and N2O.This fact, in turn, indicates that the product energy distribution is significantly atfected by the orientation in the reactive encounter.

Full text of DOI:10.1063/1.454687

Laserinitiated halfreaction. Vibrational and rotational state distribution of NO
produced from the reactant pair O(1 D)N2O
Kenji Honma, Yo Fujimura, Okitsugu Kajimoto, and Gen Inoue
Citation: The Journal of Chemical Physics 88, 4739 (1988); doi: 10.1063/1.454687
View online: http://dx.doi.org/10.1063/1.454687
View Table of Contents: http://scitation.aip.org/content/aip/journal/jcp/88/8?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:
155.33.16.124 On: Sat, 29 Nov 2014 13:19:27

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:
155.33.16.124 On: Sat, 29 Nov 2014 13:19:27

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:
155.33.16.124 On: Sat, 29 Nov 2014 13:19:27

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:
155.33.16.124 On: Sat, 29 Nov 2014 13:19:27

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:
155.33.16.124 On: Sat, 29 Nov 2014 13:19:27

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:
155.33.16.124 On: Sat, 29 Nov 2014 13:19:27

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:
155.33.16.124 On: Sat, 29 Nov 2014 13:19:27

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:
155.33.16.124 On: Sat, 29 Nov 2014 13:19:27