中文摘要：

在流动余辉装置上，利用N2空心阴极放电制备活性氮，研究了活性氮与碘乙烷（C2H5I）反应的化学发光．在620-820nm波长范围内观察到了较强的发射光谱，拟合得到的光谱常数表明它来源于NI（b^1∑^＋→X^3∑^-）跃迁，并对35个谱峰进行了振动归属．最后讨论了活性氮中主要成分与C2H5I反应的可能过程，结合辅助性实验分析表明，活性氮中的N（^2P）与C2H5I直接反应很可能产生激发态NI（b^1∑^＋）自由基．这是利用化学反应直接产生激发态NI（b^1∑^＋）的首次报道，观察到的激发态最高振动能级为v=6.

英文摘要：

Active nitrogen has been prepared by the hollow-cathode discharge through N2 in a flowing afterglow reactor. Strong emission spectra in the wavelength of 620-820 nm were detected when iodoethane （C2H5I） was added to a stream of active nitrogen, and the 35 spectral peaks have been assigned to the vibrational transitions of the NI（b^1∑^＋→X^3∑^-） band system. The possible formation mechanism of the electronically excited NI（b^1∑^＋） was proposed to be the reaction of N（^2p） in active nitrogen with C2H5I based on some quenching experiments. This is the first experimental evidence about the excited NI（b^1∑^＋） generation through chemical reaction in gas phase, and the highest vibrational level detected is v＇= 6.