Accession Number:

AD0269383

Title:

DURATION OF THE SLOW NO DECOMPOSITION REGIME BEHIND SHOCK WAVES AROUND 3000 DEGREE K AND ITS RELATION TO THE RATE COEFFICIENT OF THE EXCHANGE PATH NO + O YIELDS N + O2

Descriptive Note:

Corporate Author:

GENERAL DYNAMICS/POMONA CALIF

Personal Author(s):

Report Date:

1961-03-01

Pagination or Media Count:

1.0

Abstract:

An analysis of the chemical mechanisms governing the first and slow NO decomposition regime behind shock waves around 3000 K is provided. The duration of this regime is essentially inversely proportional to the rate coefficient k6 which governs the exchange path NO O yields N O2 and is rather insensitive to changes of additional rate coefficients entering the expression. Comparison of calculated values for the time duration based upon a value k6 equals 2.03 x 10 to the 10th power 1T2 x exp -38100RT ccmolesec with experimental shock tube results shows agreement within 50 for temperatures between 2250 and 3450 K. This result implies the validity of the pre-exponential temperature dependency factor 1T2 as derived from collision theory for the high temperature extrapolation of the value of k6 determined by previous investigations around 500 K. Author

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Distribution Statement:

APPROVED FOR PUBLIC RELEASE