RATE CONSTANTS FOR THE REACTIONS OF N-2(A3-SIGMA-U+,UPSILON') WITH O-3(X1A1)

The gas phase reaction of N2(A(3)SIGMA(u)+) with O3(X approximately 1A1) was studied in a fast flow reactor. N2(A) was prepared by the energy transfer reaction of N2(X) with Ar double ended dagger and detected by laser induced fluorescence (LIF) in the first positive system. From the depletion of N2(A,nu') as a function of the reactant concentration under pseudo-first order conditions [N2(A)]0 << [O3], the overall rate constants of the reaction N2(A,nu' = 0,1,2, and 3) + O3(X approximately 1A1) --> k1 products (1) for the specific vibronic states were determined to be: k(nu' = 0) = 2.5, k(nu' = 1) = 2.5, k(nu' = 2) = 4.8, k(nu' = 3) = 6.1 (in 10(13) cm3/mol.s) at T = 298 K. - The products NO(X(2)PI) and O(3P) formed in the elementary reaction (1) were detected by LIF via the transition (A(2)SIGMA+ - X(2)PI) and by resonance absorption (RA), respectively.