Description
This paper employs nanosecond laser-induced breakdown spectroscopy (ns-LIBS) to investigate the emission enhancement of aluminum (Al) targets under various gases including helium (He), argon (Ar), and air. A Q-switched Nd: YAG laser emitting at 1064 nm with 5 ns of pulse duration was utilized to generate the Al plasma. The measured results reveal that the intensity enhancement factor exhibits to be low in the air, however, a significant increase is noticed in the presence of Ar and He gas environment. Furthermore, the influence of time delay ranges from 100 to 1500 ns, on the intensity of emission lines, and the plasma parameters (electron temperature and electron number density) of laser-induced Al plasma were determined in the presence of air, He, and Ar. The plasma electron temperature and electron number density were measured using the Boltzmann plot and Stark broadening line profile method, respectively. It was found that the plasma parameters were much higher with Ar gas relative to air and He. This study suggests that the LIBS in combination with gases yields signal enhancement which could significantly improve the performance of LIBS for various applications, including materials science, environmental monitoring, forensic analysis, and industrial quality control.
| I am the presenting author | Yes |
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