In the present work, nanoparticles-enhanced laser-induced breakdown spectroscopy (N.E.L.I.B.S.) has been used to analyze aluminum alloy. Though LIBS has numerous advantages, it suffers from low sensitivity and low detection limits compared to other spectrochemical analytical methods. However, using gold nanoparticles helps to overcome such drawbacks and enhances the LIBS sensitivity in analyzing aluminum alloy in the current work. Aluminum is the major element in the analyzed samples (99.9%), while Magnesium (Mg) is the minor element (0.1%). Spread of gold nanoparticles onto the Al alloy and using a laser with different pulse energies have been exploited to enhance the Al alloy spectral lines. The results showed that Au NPs had successfully improved the alloy spectral lines intensity by eight times, which could be useful for detecting many trace elements in higher matrix alloys. Under the assumption of local thermodynamic equilibrium (LTE), the Boltzmann plot has been used to calculate the plasma temperature. . Besides, the electron density was calculated using Mg and H lines at Mg (I) at 285.2 nm and Hα (I) at 656.2 nm, respectively. 3D contour mapping and color fill images contributed to understanding the behavior of the involving effects.

中文翻译：

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EXPRESS：金纳米粒子增强激光诱导击穿光谱和铝合金的三维轮廓成像

在目前的工作中，纳米粒子增强激光诱导击穿光谱 (NELIBS) 已被用于分析铝合金。尽管 LIBS 有许多优点，但与其他光谱化学分析方法相比，它的灵敏度和检测限较低。然而，在目前的工作中，使用金纳米粒子有助于克服这些缺点并提高分析铝合金的 LIBS 灵敏度。铝是分析样品中的主要元素 (99.9%)，而镁 (Mg) 是次要元素 (0.1%)。金纳米粒子在铝合金上的扩散和使用具有不同脉冲能量的激光已被用来增强铝合金的谱线。结果表明，Au NPs 成功地将合金谱线强度提高了 8 倍，这可用于检测较高基体合金中的许多痕量元素。在局部热力学平衡 (LTE) 的假设下，玻尔兹曼图已用于计算等离子体温度。. 此外，电子密度是分别使用 Mg (I) 在 285.2 nm 和 Hα (I) 在 656.2 nm 处的 Mg 和 H 线计算的。3D 轮廓映射和彩色填充图像有助于理解相关效应的行为。