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

Corporate Author : GENERAL DYNAMICS/POMONA CALIF

Personal Author(s) : SULZMANN,K.G.P. ; LUDWIG,C.B.

Report Date : 01 MAR 1961

Pagination or Media Count : 1

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 1/T2 x exp (-38100/RT) cc/mole/sec 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 1/T2 as derived from collision theory for the high temperature extrapolation of the value of k6 determined by previous investigations around 500 K. (Author)

Descriptors :   *NITROGEN COMPOUNDS, *OXIDES, DECOMPOSITION, DENSITY, EXCHANGE REACTIONS, HIGH TEMPERATURE, KINETIC THEORY, MATHEMATICAL ANALYSIS, OXYGEN, REACTION KINETICS, SHOCK TUBES, SHOCK WAVES

Distribution Statement : APPROVED FOR PUBLIC RELEASE