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首页> 外文期刊>Journal of Analytical Atomic Spectrometry >Computational model of inductively coupled plasma sources in comparison to experimental data for different torch designs and plasma conditions Part I: experimental study
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Computational model of inductively coupled plasma sources in comparison to experimental data for different torch designs and plasma conditions Part I: experimental study

机译：电感耦合等离子体源的计算模型与不同割炬设计和等离子体条件下的实验数据的比较第一部分：实验研究

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摘要

Emission of argon, analyte atoms and ions, and OH lines in standard and low-argon-flow inductively coupled plasmas (ICPs) was studied spatially using a novel imaging acousto-optical spectrometer (AOS). Unique characteristics of the AOS (wavelength range: 250-800 nm, spectral resolution: 0.05-0.5 nm, time resolution: 5 ns, change of wavelength: 0.2 ms, spatial resolution: >125 μm) allowed the measurement of high quality images at 21 different wavelengths for each set of plasma conditions within approximately 20 min. Fundamental plasma properties were determined over a wide range of operational parameters. Rotational, excitation, and electron temperatures were ranging from 4580-5120 K, 4360-5000 K, and 8770-10 840 K in the analytical zone of the low-argon-flow ICP, and 3230-4250 K, 3000-5560 K, and 6130-10 200 K in the analytical zone of the standard ICP, respectively. The emission investigations were complemented by IR-measurements of the torch wall temperature and measurements of electrical properties of the ICP. RF voltages and RF currents were measured directly in the load coil and were used to calculate the plasma power. Depending on plasma conditions, the measured power differs from the indicated one (vendor software) by up to a factor of two.
机译：使用新型成像声光光谱仪（AOS）在空间上研究了标准和低氩流感应耦合等离子体（ICPs）中的氩气，分析物原子和离子以及OH线的发射。 AOS的独特特性（波长范围：250-800 nm，光谱分辨率：0.05-0.5 nm，时间分辨率：5 ns，波长变化：0.2 ms，空间分辨率：> 125μm）可以在－分辨率下测量高质量图像大约20分钟内，每组血浆条件的21种不同波长。在广泛的操作参数范围内确定了基本的血浆特性。在低氩流ICP的分析区域中，旋转温度，激发温度和电子温度分别为4580-5120 K，4360-5000 K和8770-10 840 K，以及3230-4250 K，3000-5560 K，和6130-10 200 K分别在标准ICP的分析区域中。排放调查得到了火炬壁温度的红外测量和ICP电性能的测量的补充。直接在负载线圈中测量RF电压和RF电流，并用于计算等离子体功率。根据等离子体条件，测得的功率与指示的功率（供应商软件）相差最多两倍。

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  • 来源
    《Journal of Analytical Atomic Spectrometry》 |2017年第1期|167-180|共14页
  • 作者

    M. Voronov; V. Hoffmann; C. Engelhard; W. Buscher;

  • 作者单位

    Institute of Inorganic and Analytical Chemistry, University of Muenster, Corrensstrasse 30, D-48149 Muenster, Germany;

    Institute for Complex Materials, IFW Dresden, P.O. Box 270116, D-01171 Dresden,Germany;

    Department of Chemistry and Biology, University of Siegen, Adolf-Reichwein-Str. 2, D-57076 Siegen, Germany;

    Institute of Inorganic and Analytical Chemistry, University of Muenster, Corrensstrasse 30, D-48149 Muenster, Germany;

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