物理学报Issue(20)：1-7,7.DOI:10.7498/aps.63.205205
激光诱导击穿空气等离子体时间分辨特性的光谱研究
Sp ectroscopic study on the time evolution b ehaviors of the laser-induced breakdown air plasma
摘要
Abstract
The time-resolved spectra of the air-breakdown plasma generated by the nanosecond pulsed 1064 nm beam of a Nd:YAG laser are investigated by using a PI-MAX-II ICCD with nano-time-resolved features. The results show that the laser-induced plasma spectrum in atmospheric environment is widely distributed in a range of 300-900 nm, and it is superimposed by continuous spectra and sharp line spectra. The spectral lines of oxygen, nitrogen and hydrogen are identified according to the National Institute of Standards and Technology database of atomic emission. The intuitive figures of laser-induced breakdown atmospheric plasma spectra with time resolution are given. The electron temperature and electron density are calculated according to the emission spectra. The results have scientific significance for improving the accuracy and precision of the on-line measurement in the atmospheric environment.关键词
激光诱导击穿光谱/空气/等离子体/时间分辨Key words
laser induced breakdown spectrometry/air/plasma/time evolution引用本文复制引用
刘玉峰,丁艳军,彭志敏,黄宇,杜艳君..激光诱导击穿空气等离子体时间分辨特性的光谱研究[J].物理学报,2014,(20):1-7,7.基金项目
国家自然科学基金(批准号:51206086,51176085)资助的课题.* Project supported by the National Natural Science Foundation of China (Grant Nos.51206086,51176085) （批准号:51206086,51176085）
