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Indexed by:期刊论文

Date of Publication:2018-02-01

Journal:APPLIED SPECTROSCOPY

Included Journals:SCIE、EI、PubMed

Volume:72

Issue:2

Page Number:225-233

ISSN No.:0003-7028

Key Words:Laser-induced breakdown spectroscopy; LIBS; glow discharge; liquid jet; electron temperature; electron density

Abstract: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.