Plasma condensation effect induced by ambient pressure in laser-induced breakdown spectroscopy
Plasma condensation effect induced by ambient pressure in laser-induced breakdown spectroscopy
复制标题
激光诱导击穿光谱中环境压力引起的等离子体凝结效应
DOI：
10.7567/apex.7.032402
复制
发表时间：
2014-03-01
影响因子：
2.3
通讯作者：
Zheng, Ronger
中科院分区：
文献类型：
--
作者：
Hou, Huaming;Li, Ying;Zheng, Ronger
激光诱导击穿光谱（LIBS）是一种很有前途的海洋原位化学分析技术。进行了广泛的实验研究，以了解在液体环境中的等离子体与环境压力的相互作用机制。结果表明，等离子体温度和电子密度随气压的增加而增加。在高压条件下，等离子体后期的电子密度增加。结果表明，等离子体可以被压缩，导致等离子体温度和电子密度的增加。
Laser-induced breakdown spectroscopy (LIBS) is a promising technique for in situ chemical analysis in ocean observation. Extensive experimental investigations were carried out to understand the plasma-ambient pressure interaction mechanism in a liquid environment. Results shows that plasma temperature and electron density increase with increasing pressure. Under elevated pressure conditions, the electron density increases at the late plasma stage. The results indicate that plasma could be condensed, which leads to an increase in plasma temperature and electron density.