摘要
以一种常见的无机爆炸物——黑火药及其主要成分硝酸钾作为研究对象,硝酸钠样品作为参照物,使用1 064nm调Q激光器作为光源,进行实验研究。获得了不同环境气体(空气和氩气)中三种样品的击穿诱导等离子体光谱,在不同延迟条件下获得了三种样品的时间分辨谱,并分析了三种样品的O/N谱线强度比值随延时的变化,得出在延时596ns时,O/N比值达到最大值。
Laser-induced breakdown spectroscopy is a technology that can be used for high-speed,real time,multi-component,online,remote detection,and it has considerable superiority in explosives detection.In the present experiment,using 1 064 nm Q-switch laser beam as the resource,the authors investigated a common inorganic explosive（black powder） and one of its key components（KNO3）,while choosing NaNO3 as the reference.We obtained the LIBS spectroscopy of these three samples in two surrounding atmospheres（air and Ar gas） at different time delay.And we analysed the change in line intensity ratio of N,O along with the increase in time delay,and found that the maximum of the value of O/N is obtained at time delay 596 ns.
出处
《光谱学与光谱分析》
SCIE
EI
CAS
CSCD
北大核心
2012年第3期577-581,共5页
Spectroscopy and Spectral Analysis
基金
国家自然科学基金项目(60978035)资助
关键词
激光诱导击穿光谱
时间分辨
黑火药
氩气
Laser-induced breakdown spectroscopy（LIBS）
Time resolution
Black powder
Ar surrounding gas
