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.

引用

页数：8

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