Open AccessCombination of cylindrical confinement and spark discharge for signal improvement using laser induced breakdown spectroscopy
Author(s) -
Zongyu Hou,
Zhe Wang,
Jianmin Liu,
Weidou Ni,
Zheng Li
Publication year - 2014
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.22.012909
Subject(s) - repeatability , signal (programming language) , laser induced breakdown spectroscopy , materials science , plasma , optics , pulse (music) , laser , spectroscopy , signal processing , pulse shaping , spark (programming language) , physics , computer science , chemistry , telecommunications , detector , radar , chromatography , quantum mechanics , programming language
Spark discharge has been proved to be an effective way to enhance the LIBS signal while moderate cylindrical confinement is able to increase the signal repeatability with limited signal enhancement effects. In the present work, these two methods were combined together not only to improve the pulse-to-pulse signal repeatability but also to simultaneously and significantly enhance the signal as well as SNR. Plasma images showed that the confinement stabilized the morphology of the plasma, especially for the discharge assisted process, which explained the improvement of the signal repeatability.