研究目的
To reveal the difference in plume expansion characteristics with respect to the physical properties of ablated atoms, specifically for high refractory metals i.e. Ti, Zr and Hf in He ambient.
研究成果
The study revealed atomic weight effects on plume structure and expansion behavior, with heavier elements showing larger plume sizes and thinner layers. The persistence of the Ti atomic plume was notably longer, and mass-dependent elemental separation was observed in multielement samples. These findings suggest implications for LIBS and LAAS techniques, particularly in nuclear fuel analysis.
研究不足
The study was limited to three refractory metals under specific conditions (low pressure rare gas ambient). The elemental fractionation observed may not be generalizable to all materials or conditions.
1：Experimental Design and Method Selection:
The study employed laser-induced fluorescence imaging spectroscopy to observe the dynamic behavior of an ablation plume in low pressure rare gas ambient for three refractory metals.
2：Sample Selection and Data Sources:
Samples included titanium, zirconium, and hafnium metals.
3：List of Experimental Equipment and Materials:
Equipment included an Nd:YAG laser, a tunable dye laser, an intensified CCD camera, and interference filters.
4：Experimental Procedures and Operational Workflow:
The ablation plume was produced by focusing the laser on the metal samples, and the plume's fluorescence was imaged at various delay times.
5：Data Analysis Methods:
The fluorescence intensity distributions were analyzed to study the plume structure and expansion behavior.
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