Numerical study of the expansion of metallic vapor plasma by a nanosecond laser pulse

Aggoune, Samia; Vidal, François; Amara, El-Hachemi

doi:10.1007/s00339-010-5783-0

Cited by 5 publications

(2 citation statements)

References 19 publications

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“…Su et al 21 developed a simplified radiation hydrodynamic model that considers the radiative transfer equation to investigate the radiation properties and dynamic evolution of highly charged ions in a laser-produced plasma in vacuum. Aggoune et al 22 studied the expansion characteristics of a metallic vapor assuming an initial plasma distribution. These works ignored the complex physical mechanism of plasma formation and treats the plasma with a certain shape and state as the initial distribution to study its adiabatic expansion process, which can make the physical model of plasma greatly simplified.…”

Section: Zhenyu Zhao * and Weizhong LImentioning

confidence: 99%

Numerical simulation of laser-produced plasma expansion on a droplet surface

Zhao

Li²

2023

Sci Rep

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In this study, a numerical model of the plasma expansion on a droplet surface based on the initial plasma method was proposed. The initial plasma was obtained through the pressure inlet boundary condition, and the effect of ambient pressure on the initial plasma and adiabatic expansion of the plasma on the droplet surface, including the effect on the velocity and temperature distribution, were investigated. The simulation results showed that the ambient pressure decreased, leading to an increase in the expansion rate and temperature, and therefore a larger plasma size was formed. Plasma expansion creates a backward driving force and eventually envelops the entire droplet, indicating a significant difference compared to planar targets.

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Section: Zhenyu Zhao * and Weizhong LImentioning

confidence: 99%

Numerical simulation of laser-produced plasma expansion on a droplet surface

Zhao

Li²

2023

Sci Rep

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“…To address these limitations, hydrodynamic models based on numerical solutions to the Navier-Stokes or Euler's equations are often applied to predict the evolving plasma properties and expansion dynamics of LPPs in ambient gases. [39][40][41][42][43] In these models, laser-matter interactions and heat conduction phenomena involved in the LA process are commonly decoupled from the plume expansion models, where the plasma is instead initialized at some time subsequent to the end of the laser pulse. Radiation losses and various transport mechanisms (e.g., diffusion, viscosity) between the plasma-gas species may or may not be included.…”

Section: Introductionmentioning

confidence: 99%

Experimental and computational investigation into the hydrodynamics and chemical dynamics of laser ablation aluminum plasmas

Kwapis

Posey

Médici

et al. 2023

Phys. Chem. Chem. Phys.

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Nanoparticle formation by laser ablation in air and by spark discharges at atmospheric pressure

Itina

Voloshko

2013

Appl. Phys. B

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International audienceRecent promising methods of nanoparticle fabrication include laser ablation and spark discharge. Despite different experimental conditions, a striking similarity is often observed in the sizes of the obtained particles. To explain this result, we elucidate physical mechanisms involved in the formation of metallic nanoparticles. In particular, we compare supersaturation degree and sizes of critical nucleus obtained under laser ablation conditions with that obtained for spark discharge in air. For this, the dynamics of the expansion of either ablated or eroded products is described by using a three-dimensional blast wave model. Firstly, we consider nanosecond laser ablation in air. In the presence of a background gas, the plume expansion is limited by the gas pressure. Nanoparticles are mostly formed by nucleation and condensation taking place in the supersaturated vapor. Secondly, we investigate nanoparticles formation by spark discharge at atmospheric pressure. After efficient photoionization and streamer expansion, the cathode material suffers erosion and NPs appear. The calculation results allow us to examine the sizes of critical nuclei as function of the experimental parameters and to reveal the conditions favorable for the size reduction and for the increase in the nanoparticle yield

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Numerical study of the expansion of metallic vapor plasma by a nanosecond laser pulse

Cited by 5 publications

References 19 publications

Numerical simulation of laser-produced plasma expansion on a droplet surface

Numerical simulation of laser-produced plasma expansion on a droplet surface

Experimental and computational investigation into the hydrodynamics and chemical dynamics of laser ablation aluminum plasmas

Nanoparticle formation by laser ablation in air and by spark discharges at atmospheric pressure

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