Vibrational relaxation of nitric oxide in argon

Goro Kamimoto*, Hiroyuki Matsui

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

6 Scopus citations


Vibrational relaxation times of NO diluted in Ar were measured by monitoring infrared emission of NO at 5.3 μ. Measurements were made in shock waves over the temperature range of 900-2700°K. NO was found to relax exponentially and the relaxation times of NO in NO-NO and NO-Ar collisions were estimated. The results were expressed by logpτNO-NO = 6.1 T -1/3-1.1 atm·μsec and logpτNO-Ar= 14.7T -1/3+0.15 atm·μsec.

Original languageEnglish
Pages (from-to)3987-3989
Number of pages3
JournalThe Journal of chemical physics
Issue number10
StatePublished - 15 Nov 1970


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