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Vibrational relaxation of NO(ν = 2, 3) by atomic oxygen

✍ Scribed by J.A. Dodd; S.M. Singleton; S.M. Miller; P.S. Armstrong; W.A.M. Blumberg

Publisher: Elsevier Science
Year: 1996
Tongue: English
Weight: 468 KB
Volume: 260
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(96)00851-2

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✦ Synopsis

A two-laser, pump-probe arrangement has been used to measure room-temperature rate constants for the collision-induced relaxation of NO(v ~ 2, 3) by O atoms. The rate constants ko(o) are equal to (2.2 + 0.2) × 10-~t and (2.5 + 0.3) x 10 -11 cm 3 s -1 for v = 2 and 3, respectively. These values are significantly lower than previously measured values for v = 1, but are in accord with model predictions assuming the role of a metastable NO~ intermediate. The NO self-relaxation rate constants kNo(u) have been measured to be (3.2 + 0.3)X 10 -12 and (4.0 +_ 0.4)X 10 -t2 cm 3 s-I for v = 2 and 3, respectively, in reasonable agreement with published results.

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