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Dispersed emission spectrum of NH2 (Ã 2A1) in the ultraviolet laser photolysis of HN3 and the mechanism of formation

✍ Scribed by Katsuyoshi Yamasaki; Akihiro Watanabe; Ikuo Tokue; Yoshio Ito

Publisher
Elsevier Science
Year
1993
Tongue
English
Weight
401 KB
Volume
204
Category
Article
ISSN
0009-2614

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✦ Synopsis

The chemiluminiscent reaction following the ultraviolet (266 nm) photolysis of HN, has been studied. A dispersed emission spectrum was recorded, which is, to the best of our knowledge, the fast direct identification of the origin of the chemiluminescence. The emissive species was assigned to vibronically excited NH2. The observed vibrational distribution in the NHz(A'A,) was not consistent with the reaction mechanism previously suggested (NH (a 'A, IJ~ 0) + HN,). A modified mechanism including vibrationally excited NH( a 'A) has been proposed on the basis of energetics and kinetics in terms of the emission.

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