journal article·2018-09-01Open access

Enhancement of long wavelength preheating in dual-beam laser induced breakdown spectroscopy

Yeqiu Li, Rina Wu, Qin Dai, Qian Li, Nan Gong, Chenglin Sun, Zhiwei Men

AIP Advances· Volume 8· Issue 9

Abstract

Dual-beam laser induced breakdown spectroscopy (LIBS) is more sensitive than conventional single-pulse LIBS. A combined configuration of Nd:YAG and CW- CO2 lasers is used to improve the emission intensity of LIBS. The plasma of Al sample was observed under CW-CO2 laser and Nd:YAG laser excitation. The enhancement radiation was obtained from dual-beam LIBS rather than single LIBS, which indicated that IR preheating can cause significant enhancement of plasma. The effects of CO2 laser spot size, laser irradiation time and laser power on plasma emission intensity were investigated. And on this basis, the variation of electron temperature and electron density of plasma with delay time is obtained.
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Research context

OpenAlex topics: Laser-induced spectroscopy and plasma · Analytical chemistry methods development · Mercury impact and mitigation studies

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Coherent Light and Atomic and Molecular Spectroscopy Laboratory, College of Physics, Jilin University 1 , Changchun 130012, China

College of Physics, Shenyang Ligong University 2 , Shenyang 110159, China

Key Laboratory of Physics and Technology for Advanced Batteries, College of Physics, Jilin University 3 , Changchun 130012, People’s Republic of China

Funding

Support program for innovative talents in Liaoning University · National Natural Science Foundation of China · Natural Science Foundation of Liaoning Province

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