在流动余辉装置上,利用N2空心阴极放电制备活性氮,研究了活性氮与溴代烷烃(CHBr3、CH2Br2、C2H5Br、C4H9Br)反应的化学发光.上述所有反应中,在550～750nm波段均观察到了较强的NBr(b1Σ+→X3Σ-)跃迁发射谱.同时在活性氮与CHBr3和CH2Br2的反应中,在流动管下游还观察到了CN(A2仔,B2仔→X2撞+)的发射谱.验证性的实验表明,激发态NBr(b1Σ+)是由二步过程形成:N(4S)与溴代烷烃反应生成NBr(X3Σ-),再通过N2(A3Σu+)分子能量转移到激发态NBr(b1Σ+);而激发态的CN是通过N(4S)+CBr→CN(A,B)+Br过程形成的. The chemiluminescence reaction of reactive nitrogen with brominated alkanes (CHBr3, CH2Br2, C2H5Br, C4H9Br) was studied by N2 hollow cathode discharge on a mobile afterglow device. In all of the above reactions, the reaction was observed at 550-750 nm Strong emission spectra of NBr (b1Σ + → X3Σ-), while emission spectra of CN (A2, B2 → X2 +) were also observed downstream of the flow tube in the reaction of reactive nitrogen with CHBr3 and CH2Br2. The experimental results show that NBr (b1Σ +) is formed by a two-step process: N (4S) reacts with brominated alkanes to form NBr (X3Σ-) and then transfers to NBr b1Σ +); while the excited CN is formed by N (4S) + CBr → CN (A, B) + Br process.