On the collision quenching of { N}_2^+(B\,^2Σᵤ^+, v=0) by N₂and O₂and its influence on the measurement ofE/Nby intensity ratio of nitrogen spectral bands

Abstract+ 2 (B 2 ? + u, v = 0) by N 2 and O 2 and its influence on the measurement of E/N by intensity ratio of nitrogen spectral bands Abstract. Laser induced fluorescence measurements of the rate coefficients of N + 2 (B 2 ? + u, v = 0) collision quenching by N 2 and O 2 are presented. The values of (8.84 ? 0.37) ? 10 ?10 cm 3 s ?1 and (10.45 ? 0.45) ? 10 ?10 cm 3 s ?1 have been found for N 2 and O 2 respectively. The present results agree well with literature data obtained by selective methods for ion B state excitation. The data are discussed in the frame of the spectroscopic evaluation of the reduced electric field in electrical discharges at high pressure, that makes use of the Second Positive System (SPS) and First Negative System (FNS) emissions of nitrogen. Collision quenching of N + 2 (B 2 ? + u, v = 0) by N 2 and O 2 2