Mesure et analyse de l'hydrogène atomique et moléculaire diatomique AlO, C 2, CN, et TiO Spectra après une rupture optique induite par laser

Overview

This study focuses on measuring and analyzing time-resolved spectral signatures of atomic and molecular emissions generated by laser-induced sparks. By adjusting the time delay from optical plasma generation, researchers can capture the evolution of these emissions over time.

Key Study Components

Area of Science

• Laser-induced breakdown spectroscopy
• Plasma physics
• Spectral analysis

Background

• Laser-induced optical breakdown is a technique for generating plasma.
• Time-resolved measurements provide insights into electron density and temperature.
• Comparative analysis with theoretical predictions enhances understanding of plasma behavior.
• This method is simpler than traditional electrical discharge techniques.

Purpose of Study

• To measure atomic and molecular emissions following laser-induced plasma generation.
• To analyze the temporal evolution of these emissions.
• To determine temperature from diatomic recombination spectra.

Methods Used

• Focused pulsed laser radiation at 1064 nm on a target.
• Adjusted time delays for spectral measurements.
• Calibrated wavelength and intensity of recorded data.
• Compared experimental results with theoretical predictions.

Main Results

• Successful measurement of time-resolved atomic and molecular spectra.
• Determined electron density and temperature from spectral data.
• Demonstrated the technique's effectiveness compared to traditional methods.
• Provided insights into the evolution of species in the plasma.

Conclusions

• Laser-induced breakdown spectroscopy is a viable method for plasma analysis.
• The technique allows for detailed temporal studies of atomic and molecular emissions.
• Results support the use of this method in future plasma research.

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