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Updated: Jul 24, 2025
08:53
Dependence of Laser-induced Breakdown Spectroscopy Results on Pulse Energies and Timing Parameters Using Soil Simulants
Published on: September 23, 2013
11.4K
Backscattering Echo Intensity Characteristics of Laser in Soil Explosion Dust
Lijuan Gao1, Fue-Sang Lien2, Huimin Chen1
1Science and Technology on Electromechanical Dynamic Control Laboratory, Beijing Institute of Technology, Beijing 100081, China.
Sensors (Basel, Switzerland)
|July 8, 2023
Summary
This study uses an indoor explosion chamber to measure laser backscattering in soil dust. Results show dust concentration peaks early, impacting laser detection, and correlates with image gray values.
Area of Science:
- Physics
- Engineering
- Environmental Science
Background:
- Laser-based detection systems struggle with accuracy in environments with soil dust generated by explosions.
- Field testing in such conditions is hazardous and lacks environmental control.
Purpose of the Study:
- To develop a safe and controlled method for assessing laser transmission through soil explosion dust.
- To analyze the characteristics of laser backscattering echo intensity in controlled dust environments.
Main Methods:
- Utilized high-speed cameras and an indoor explosion chamber to simulate soil explosion dust.
- Investigated the influence of explosive mass, burial depth, and soil moisture on dust distribution.
- Measured the backscattering echo intensity of a 905 nm laser at various heights.
Main Results:
- Soil explosion dust concentration peaked within the first 500 ms after the blast.
- Minimum normalized peak echo voltage varied between 0.318 and 0.658.
- Laser backscattering intensity strongly correlated with the mean gray value of dust images.
Conclusions:
- The study provides a viable indoor method for evaluating laser performance in dust.
- Experimental data offers a theoretical foundation for improving laser detection in challenging environments.
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