活性氮与溴分子反应的实验研究  

Experimental Study on the Reaction between Active Nitrogen with Bromine

作　　者：唐晓闩[1] 付鹏[1] 陈远奎[1] 王鸿梅[2] 储焰南[2] 

机构地区：[1]安徽师范大学物理与电子信息学院,芜湖241000 [2]中国科学院安徽光学精密机械研究所环境光谱学研究室,合肥230031

出　　处：《化学学报》2010年第11期1093-1097,共5页Acta Chimica Sinica

基　　金：国家自然科学基金(No.20703001);安徽高校省级自然科学研究项目(No.KJ2008B016)资助项目

摘　　要：在流动反应管中,利用高纯N2空心阴极放电制备活性氮,研究了活性氮与溴分子碰撞反应得到的发射光谱.在540～800nm波段观察到了较强的NBr(b1Σ+→X3Σ-)跃迁发射谱,在292nm处观察到了Br2(D'→A')辐射跃迁.实验结果表明,得到的NBr(b1Σ+)显示出了非弛豫的发射特征,最高振动能级为ν'=9.激发态的NBr(b1Σ+)是由活性氮中的N(2P)原子与Br2直接反应生成的.Active nitrogen has been prepared by hollow-cathode discharge of high pure nitrogen in a flow reactor, and the emission spectra obtained in the reaction of active nitrogen with Br2 have been studied. The strong emission spectra of NBr（b^1Σ^＋→X^3Σ^- ） in the range of 540-800 nm have been observed when bromine is added to a stream of active nitrogen, and the spectra around 292 nm is ascribed to the transition of Br2（D＇→A＇）. The results show that the excited state NBr（b^1Σ^＋） are found to exhibit vibrationally unrelaxed emissions （from up to v＇=9）, and the electronically excited NBr（b^1Σ^＋） is formed directly by the reaction of excited nitrogen atom N（^2p） with Br2.

关 键 词：发射光谱 活性氮 NBR 

分 类 号：O643.1[理学—物理化学]