Flame Temperature Measurement Based on Laser-Induced Breakdown Spectroscopy and Element Doping
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Updated: Oct 15, 2025

Measurement and Analysis of Atomic Hydrogen and Diatomic Molecular AlO, C2, CN, and TiO Spectra Following Laser-induced Optical Breakdown
Published on: February 14, 2014
Bin Tai1,2,3, Xiaojian Hao1,2,3, Jia Wang1,2,3
1Science and Technology on Electronic Test and Measurement Laboratory, North University of China, Taiyuan, Shanxi Province 030051, China.
Abstract:
In this study, based on the existing high-temperature measurement and calibration equipment, calibration experiments using the spectral emissivity of intrinsic element particles in the field were designed to achieve the accurate measurement of a temperature field. Laser-induced breakdown spectroscopy was used to select the corresponding elements, and the element doping method was used to approximate the real temperature field. After calibrating the camera, the temperature distribution and spectral emissivity distribution of the flame were calculated. The range of calculated values was determined to be well-consistent with data collected using an infrared thermal imager, which verified the accuracy of the experiment.
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