Time-resolved characteristics of laser induced breakdown spectroscopy on non-flat samples by single beam splitting

Lei, Bingying; Xu, Boping; Wang, Jing; Li, Jing; Wang, Yishan; Tang, Jie; Zhao, Wei; Duan, Yun

doi:10.1039/d0ra06582j

Cited by 7 publications

(1 citation statement)

References 37 publications

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“…In the recombination process, the released thermal energy goes to free electrons, which further reduces the temporal dependence of T e to t d −1 instead of t d −2 . In practical cases, experimental LIP shows deviation from the theoretical co-relation as reported in literatures [49,50] and showed lower degree of dependence with t d , due to change of expansion mechanism of a LIP in ambient atmospheric condition. But the smoother decrease of T e remains expected [28], which is also evident by trend reported in the literature report by Zorba et al [51].…”

Section: Plasma Electron Density (N E )mentioning

confidence: 50%

Delving into the time dependent properties of thorium laser induced plasma by optical emission spectroscopy

Banerjee,

Mohan,

Sarkar

2024

J Opt

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Laser-induced breakdown spectroscopy (LIBS) presents a promising avenue for both qualitative and quantitative analysis. This technique utilizes emission spectral study from laser-induced plasma (LIP) generated due to ablation of samples from surfaces. From the point of view of understanding plasma physics, this study delves into the parametric analysis of Laser-induced plasma of Thorium, which is a key element in India’s pioneering three stage power program. Following optimization of experimental parameters like acquisition delay and number of laser shots, key plasma parameters such as Temperature and Electron density of the plasma were computed. For description of LIP, ‘Local Thermodynamic Equilibrium’ (LTE) model is widely used. The model’s validity was meticulously scrutinized in entire temporal region of analysis. Furthermore, investigations into the impact of laser parameters like irradiance, revealed changes in magnitude of plasma parameters along with their evolution pattern and it was concluded that the temporal holding region of LTE strongly depends upon the laser parameters. Next, temporal evolution study of the peak broadening within the plasma revealed the importance of optimization of the experimental parameters, and differences between the decay trends of ionic and atomic lines were clarified. In addition, experiments were carried out exploring the influence of different ambient atmospheres (Air, He, and Ar) on spectral intensity and plasma lifetime, both of which were found to have the order Ar > Air > He. This provided crucial insights into the plasma-atmosphere interaction, which was also manifested by the different rates of decay trend of plasma parameters. In summary, this complete study offers a valuable tool for diagnosing the plasma properties of complex sample matrices like Thorium, thereby advancing our understanding of LIBS applications a step forward.

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Section: Plasma Electron Density (N E )mentioning

confidence: 50%

Delving into the time dependent properties of thorium laser induced plasma by optical emission spectroscopy

Banerjee,

Mohan,

Sarkar

2024

J Opt

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Contrasting time-resolved characteristics of laser-induced plasma spatially confined by conical cavities with different bottom diameters

Liu

Lei

et al. 2022

Appl. Phys. B

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Effect of single and double pulse laser-induced breakdown spectroscopy towards steel alloy in different gaseous media

Alkallas,

Mostafa,

Trabelsi

et al. 2024

Materials Chemistry and Physics

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Time-resolved characteristics of laser induced breakdown spectroscopy on non-flat samples by single beam splitting

Abstract: A single-beam-splitting approach was used to enhance the signal intensity of LIBS under the extreme condition of a laser beam grazing the surface of non-flat samples. We investigated the time-resolved characteristics of laser-induced plasma under single- and split beam modes.

Cited by 7 publications

References 37 publications

Delving into the time dependent properties of thorium laser induced plasma by optical emission spectroscopy

Delving into the time dependent properties of thorium laser induced plasma by optical emission spectroscopy

Contrasting time-resolved characteristics of laser-induced plasma spatially confined by conical cavities with different bottom diameters

Effect of single and double pulse laser-induced breakdown spectroscopy towards steel alloy in different gaseous media

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