活性氮反应产生激发态卤化氮实验研究 |
| |
作者单位: | 中国科学院安徽光学精密机械研究所,环境光谱学实验室,中国科学院环境光学与技术重点实验室,合肥,230031;安徽师范大学物理电信学院原子与分子物理实验室,芜湖,241000;中国科学院安徽光学精密机械研究所,环境光谱学实验室,中国科学院环境光学与技术重点实验室,合肥,230031 |
| |
摘 要: |
|
关 键 词: | 活性氮 卤化氮 发射光谱 能量转移 |
Electronically Excited NX(b)(X=F,Cl,Br) Formation by Active Nitrogen Reaction |
| |
Authors: | Tang Xiaoshuan Wang Hongmei Han Haiyan Li Jianquan Jin Shunping Huang Guodong Chu Yannan Zhang Weijun Zhou Shikang |
| |
Institution: | {{each article.affiliations aff i}}
{{if aff.addressEn && aff.addressEn != ""}}
{{if aff.label && aff.label != "" && article.affiliations.length != 1}}{{@ aff.label}}.{{/if}}{{@ aff.addressEn}}{{/if}}
{{/each}} |
| |
Abstract: | A new method for producing electronically excited nitrogen monohalides NX(b) (X=F,Cl,Br) is reported. The strong emission spectra of NBr(b1Σ+→X3Σ–) are observed when alkyl bromides (CHBr3, CH2Br2, C2H5Br, and C4H9Br) are added to a stream of active nitrogen, generated by a hollow-cathode discharge of N2, in a flowing afterglow system. Some tentative experiments show that the electronically excited NBr(b) is formed by means of metastable N2(A3Σu+) Electronic-to-Electronic energy transfer to NBr(X), which is from the reaction of N(4S) with alkyl bromides. The emission spectra of NCl(b1Σ+→X3Σ–) are obtained when CCl4 or SOCl2 is admitted into a flow of active nitrogen, but neither CHCl3 nor CH2Cl2 addition results in such an emission. It has been proposed that the origin of the excited NCl(b) is an energy transfer from N2 (A) to NCl(X), generated by the reaction of N(4S) with CCl3 (or SOCl2). Similar experiments are also carried out with SF6 as reagent of active nitrogen, or as mixture with N2 in the discharge. By recording fluorescence it was found that excited NF(b) is produced only under discharge through N2/SF6 mixture. The NF(b) state presumably arises from the energy transfer from N2(A) to NF(X), and the latter is generated from the abstraction of fluorine by N(4S) from SF5. |
| |
Keywords: | Active nitrogen NX (X=F Cl Br) Energy transfer Emission spectra |
本文献已被 万方数据 等数据库收录! |
| 点击此处可从《化学物理学报(中文版)》浏览原始摘要信息 |
| 点击此处可从《化学物理学报(中文版)》下载免费的PDF全文 |
|