Spectroscopic Diagnostics of Spectral Lines Emission from Cu Plasma within the Visible Spectrum Range

Q2 Pharmacology, Toxicology and Pharmaceutics

Science and Technology Indonesia Pub Date : 2023-10-01 DOI:10.26554/sti.2023.8.4.710-715

Hayim Ch. Magid, Bushra Khamas Abbas, Dunia F. T. AL-Ani

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Abstract

The creation and characterization of laser-induced plasma (LIP), a significant phenomenon in several applications, are influenced by the sample’s physical qualities as well as the laser’s parameters. In this research, we created Cu plasma in the atmosphere using an Nd: YAG laser operating at a wavelength of 532 nm with a laser irradiance energy range (400-800) mJ. The effect of the laser’s irradiance energy on the plasma characteristics was investigated using optical emission spectroscopy (OES). Using the two ratio and Stark broadening methods, we successfully measured the two most important plasma properties (electron temperature and electron density). The electron’s plasma temperature value ranged from 2.3 to 3 eV. The value of electron plasma density is in the range from 6.75×1017 to 15×1017 cm−3. Also, we found that other plasma parameters like plasma frequency (fp), particles in the Debye sphere (ND), and Debye length (?D) are affected by laser energy. Where plasma frequency ranged from 7.378 to 10.998×1012 Hz, the Debye sphere ranged from 7.294 to 7.022×103, and the range of Debye length from 1.372 to 1.038×10−5 cm.

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可见光谱范围内铜等离子体光谱线发射的光谱诊断

激光诱导等离子体(LIP)的产生和表征在许多应用中都是一个重要的现象，它受样品的物理质量和激光参数的影响。在本研究中，我们使用Nd: YAG激光器在532 nm波长下，激光辐照能量范围(400-800)mJ，在大气中创造了Cu等离子体。利用发射光谱法研究了激光辐照能量对等离子体特性的影响。利用两个比值法和Stark展宽法，我们成功地测量了两个最重要的等离子体性质(电子温度和电子密度)。电子的等离子体温度值在2.3 ~ 3ev之间。电子等离子体密度的取值范围为6.75×1017 ~ 15×1017 cm−3。此外，我们还发现等离子体的其他参数，如等离子体频率(fp)、德拜球中的粒子(ND)和德拜长度(?D)受到激光能量的影响。其中等离子体频率范围为7.378 ~ 10.998×1012 Hz，德拜球范围为7.294 ~ 7.022×103，德拜长度范围为1.372 ~ 1.038×10−5 cm。

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