研究目的
Investigating the properties of laser-induced plasma channels (LIPC) formed by femtosecond laser radiation in argon at various pressures.
研究成果
Optimum conditions for LIPC propagation in argon are identified at pressures of 6 to 10 bar, achieving maximum electron temperature and conductivity. This facilitates stable electric arc discharge (EAD) localization, suggesting potential for efficient discharge control in applications.
研究不足
The study is limited to argon gas and does not explore other gases or mixtures. The pressure range is constrained by equipment capabilities, and the LIPC length is visually detected, which may introduce measurement inaccuracies.
1：Experimental Design and Method Selection:
The study involves the formation of LIPC in argon using femtosecond laser pulses and analyzing their characteristics at different pressures.
2：Sample Selection and Data Sources:
Argon gas at various pressures is used as the medium for LIPC formation.
3：List of Experimental Equipment and Materials:
The 'ТЕТА-10' femtosecond laser system, focusing lens, isolated vessel, CCD camera, spectrometer, and gas handling equipment.
4：Experimental Procedures and Operational Workflow:
Laser radiation is focused into an argon-filled vessel to form LIPC, whose characteristics are then measured using a spectrometer and CCD camera.
5：Data Analysis Methods:
The electron temperature and concentration in LIPC are calculated using the relative intensity of spectral lines and the Saha equation, respectively.
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