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论文类型：期刊论文

发表时间：2018-02-01

发表刊物：APPLIED SPECTROSCOPY

收录刊物：SCIE、EI、PubMed

卷号：72

期号：2

页面范围：225-233

ISSN号：0003-7028

关键字：Laser-induced breakdown spectroscopy; LIBS; glow discharge; liquid jet; electron temperature; electron density

摘要：In this work, emission signals of laser-induced breakdown (LIBS) plasma of a flowing liquid jet in the absence and presence of an air-supported glow discharge have been investigated. In combination with a needle-to-needle glow discharge, a Q-switched neodymium-doped yttrium aluminum garnet (Nd:YAG) laser (1064 nm, 5 ns) with power density similar to 10(10)W/cm(2) was used to generate a plasma from a liquid jet. Emission lines of Mg, Ca, Al, Li, Na, and K all showed significant enhancements in the presence of the glow discharge. Lower continuum background was also observed. Mechanisms of the line emission enhancement and continuum radiation reduction were discussed.