Parametric Study of NCl(a~1Δ), NCI(b~1Σ) from the reaction of Cl/Cl_2/He + HN_3/He

摘要

By means of Microwave generator chlorine diluted by helium is dissociated to chlorine atoms that subsequently react with hydrogen azide to produce excited states of NCl(a~1Δ) and NCl(b~1Σ). In this paper, the intensity of NCl(a~1Δ) and NCl(b~1Σ) emission dependent on the flow rates of different gases is studied. Moreover, the production of NCl(a~1Δ) and NCl(b~1Σ) along the reaction tube is also investigated. By using a simple titration method, we obtain the dissociation efficiency of molecular chlorine up to 100% at the flow rates of chlorine no more than lmmol/s. We also achieve the quenching rate of NCl(a~1Δ) by C1_2 is about 4x10~(-13) cm~3/secmolec with excess flow rates of chlorine. Finally, the optimum parameters for NCl(a~1Δ) and NCl(b~1Σ) production are summarized.