研究目的
Investigating the influence of target temperature on femtosecond laser-ablated brass plasma spectroscopy to improve the sensitivity and resolution of laser-induced breakdown spectroscopy (LIBS).
研究成果
Increasing the target temperature enhances the spectral intensity of femtosecond laser-induced plasma, improves the electron temperature, and decreases the electron density, leading to higher resolution and sensitivity in LIBS. This method provides a simple and effective way to improve LIBS performance.
研究不足
The study was conducted in an atmospheric environment, which may affect the plasma properties. The range of target temperatures was limited to 25 oC to 200 oC, and the effects of higher temperatures were not explored.
1：Experimental Design and Method Selection:
The study used a femtosecond laser system to ablate brass targets at varying temperatures to generate laser-induced plasma (LIP). Time-resolved spectral emission was measured to analyze the plasma's properties.
2：Sample Selection and Data Sources:
Brass targets were used, heated to temperatures ranging from 25 oC to 200 oC.
3：List of Experimental Equipment and Materials:
A regeneration amplified Ti:sapphire laser (Libra, Coherent), spectrometer (Spectra Pro 500i, PI Acton), intensified charge-coupled device (ICCD, PI-MAX4, Princeton Instruments), and a heating table with a thermocouple for temperature control.
4：Experimental Procedures and Operational Workflow:
The laser was focused onto the brass target, and the emitted plasma light was collected and analyzed. The target temperature was varied, and the spectral emissions were recorded at different delay times.
5：Data Analysis Methods:
Electron temperature and density were calculated using the Boltzmann equation and Stark broadening, respectively.
独家科研数据包，助您复现前沿成果，加速创新突破
获取完整内容
