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Updated: May 16, 2026

Method for Recording Broadband High Resolution Emission Spectra of Laboratory Lightning Arcs
Published on: August 27, 2019
[Welding arc temperature field measurements based on Boltzmann spectrometry]
Hong Si1, Xue-Ming Hua, Wang Zhang
1Welding Engineering Technology Research Institute, School of Materials Science and Engineering, Shanghai Jiaotong University, Shanghai 200240, China. sjtu_sh@163.com
Accurate plasma temperature measurement is crucial for understanding arc plasma processes. This study utilizes the Boltzmann plot method for precise temperature distribution analysis in TIG arc measurements.
Area of Science:
- Plasma Physics
- Spectroscopy
- Thermodynamics
Context:
- Arc plasma exhibits complex internal energy and mass transport due to its non-uniform nature.
- Accurate plasma temperature measurement is essential for characterizing these transport processes.
Purpose:
- To calculate the temperature distribution within arc plasma.
- To analyze the principles of spectral line selection for accurate Boltzmann plot measurements.
Summary:
- This paper applies Boltzmann theory to determine arc plasma temperature distribution.
- It details spectral line selection criteria for real-time TIG arc measurements.
- The Boltzmann plot method is presented as a more accurate and convenient alternative to other techniques.
Impact:
- Provides a more accurate method for plasma temperature diagnostics.
- Enhances understanding of energy and mass transport in non-uniform plasmas.
- Facilitates improved control and optimization of plasma-based industrial processes.
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