活性氮与三溴甲烷反应化学发光研究  

Chemiluminescence of the reaction of active nitrogen with CHBr_3

作　　者：王占新[1] 唐晓闩[1] 王鸿梅[1] 李建权[1] 韩海燕[1] 张为俊[1] 储焰南[1] 周士康[1] 

机构地区：[1]中国科学院安徽光学精密机械研究所环境光谱实验室,安徽合肥230031

出　　处：《量子电子学报》2005年第4期592-596,共5页Chinese Journal of Quantum Electronics

基　　金：合肥物质科学研究院院长基金(20020602)

摘　　要：在流动余辉装置上,利用空心阴极放电产生的活性氮与CHBr3分子碰撞,在550-750 nm波长范围内观察到了较强的NBr(b→X)跃迁发射谱;同时,在反应管的下游,我们探测到了CN(A,B)的发射谱。分析认为化学发光机理是:亚稳态氮原子N(2D)与CHBr3之间的一步传能反应直接产生了NBr(b)激发态,而CN(A,B)态则来自基态原子N(4S)与CBr的反应,其中CBr是CHBr3经活性氮中的亚稳态N2(A)激发离解形成的。The chemiluminescence of active nitrogen reaction with CHBr3 was investigated in a flowing afterglow reactor. Strong emission spectrum was observed in the wavelength range from 550 to 750 nm, which is ascribed to NBr（b→X） transition. Meanwhile, in the downstream of the flow tube, emission spectrum exhibits different character dominantly from excited states CN（A, B）. The formation mechanism of these excited species has been analyzed, indicating that the generation channel of NBr（b） is from direct N（^2D） abstraction bromine from CHBr3, and the excited CN（A, B） comes from the reaction of N（^4S） with CBr, which is formed due to CHBr3 dissociation by metastable N2（A）.

关 键 词：光谱学 活性氮 化学发光 能量转移 

分 类 号：O643.1[理学—物理化学]