量子电子学报2024，Vol.41Issue(2)：207-214,8.DOI:10.3969/j.issn.1007-5461.2024.02.003
光丝诱导大气等离子体化学反应生成的一氧化氮测量
Measurement of nitric oxide generated from filament-induced atmospheric chemical reaction
摘要
Abstract
Atmospheric plasma can induce chemical reactions,and nitric oxide(NO)is one of the main products of atmospheric chemical reactions.Accurate measurement of atmospheric concentration of NO is helpful for revealing the mechanism of atmospheric chemical reactions and optimizing the application of plasma in the atmospheric environment.In this work,NO is generated through atmospheric chemical reactions induced by filament plasma produced by ultrashort laser pulses with a pulse width of 35 femtoseconds and a working wavelength of 800 nm in a sealed absorption cell under variable air pressure.Then,mid-infrared laser absorption spectroscopy is used to measure NO in real time and in situ at variable pressure.It is found that under different air pressures,the concentration of NO produced increases with the reaction time until it remains stable.However,it requires more time for NO to reach a steady concentration with the increase of air pressure.Due to the influence of three-body recombination,the accumulated volume ratio concentration of NO decreases from more than 400×10-6 at low pressure to about 120×10-6 at atmospheric pressure.关键词
光谱学/超短脉冲激光/大气化学反应/一氧化氮/中红外光谱Key words
spectroscopy/ultrashort pulse laser/atmospheric chemical reaction/nitric oxide/mid-infrared spectroscopy分类
数理科学引用本文复制引用
张梦,汪露萍,黄倩,邱选兵,李传亮,邓伦华..光丝诱导大气等离子体化学反应生成的一氧化氮测量[J].量子电子学报,2024,41(2):207-214,8.基金项目
国家自然科学基金(52076145),华东师范大学幸福之花基金(2021ST2110) （52076145）
