Dynamic model of target charging by short laser pulse interactions

Area of Science:

• Plasma Physics
• Laser-Matter Interaction
• Surface Science

Background:

• High-intensity, ultrashort laser pulses interacting with metallic targets generate complex phenomena.
• Accurate modeling of surface charge dynamics is crucial for understanding these interactions.
• Existing models may lack precision in predicting charge accumulation under specific laser conditions.

Purpose of the Study:

• To develop and validate a precise model for estimating surface charge accumulation.
• To investigate charge dynamics on metallic surfaces irradiated by femtosecond-picosecond laser pulses.
• To provide a tool for analyzing electromagnetic pulse (EMP) emission and quasistatic magnetic field generation.

Main Methods:

• Development of a theoretical model for charge accumulation.
• Experimental validation using specially designed setups.
• Comparison of model predictions with experimental data.

Main Results:

• The proposed model accurately estimates surface charge accumulation.
• Experimental data confirmed the model's predictive capabilities.
• The model's utility was demonstrated in the context of laser-plasma interactions.

Conclusions:

• The developed model offers a reliable method for assessing surface charge buildup.
• This work enhances the understanding of electromagnetic pulse emission.
• The model is valuable for research in laser-plasma physics and related fields.