TEA CO2 Laser - Polymethyl Methacrylate Interaction: LIBS Hydrogen Analysis

被引：7
|
作者：
Trtica, Milan [1 ]
Kuzmanovic, Miroslav [2 ]
Savovic, Jelena [1 ]
Rankovic, Dragan [2 ]
机构：
[1] Univ Belgrade, VINCA Inst Nucl Sci, Dept Phys Chem, Natl Inst Republ Serbia, Mike Petrovica Alasa 12-14, Belgrade 11001, Serbia
[2] Univ Belgrade, Fac Phys Chem, Studentski Trg 12-16,118 PAC 105305, Belgrade 11158, Serbia
来源：
APPLIED SURFACE SCIENCE | 2022年 / 572卷
关键词：
Polymethyl methacrylate (PMMA); Laser-induced breakdown spectroscopy (LIBS); Hydrogen detection; Plasma diagnostics; INDUCED BREAKDOWN SPECTROSCOPY; RELATIVE OSCILLATOR-STRENGTHS; FE-I TRANSITIONS; LASER-ABLATION; OPTICAL-EMISSION; PRECISION-MEASUREMENT; PLASMA; ACCURACY; IDENTIFICATION; UV;
D O I：
10.1016/j.apsusc.2021.151424
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The interaction of a Transversely Excited Atmospheric (TEA) CO2 laser with a polymer polymethyl methacrylate (PMMA) sample in a vacuum ambiance was studied. The main goal was to demonstrate the feasibility of laser-induced breakdown spectroscopy (LIBS) to detect hydrogen. The generation of plasma over the PMMA surface, using a low laser intensity of similar to 48 MW/cm(2) and fluence of similar to 16.5 J/cm(2), required the application of a metal sub-target. Besides hydrogen, the recorded spectra were dominated by atomic lines of carbon and oxygen and band emission of the C-2 and CN molecules. The electron number density and temperature (ionic, vibrational, and rotational) were evaluated to characterize the laser-induced plasma. In addition, PMMA micro-damages (diameter similar to 45 mu m) created by a multipulse laser ablation could find potential applications in sensor technologies.
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页数：8
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