Effect of the dielectric transition on laser-induced phase explosion in metals

Porneala, Cristian; Willis, David A.

doi:10.1016/j.ijheatmasstransfer.2005.11.005

Cited by 32 publications

(17 citation statements)

References 10 publications

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“…At the same time, in the process of ultra-short pulsed laser ablation, the heat affected area is small, which makes the thickness of melting layer smaller [65]. Therefore, the effect of the dielectric layer is not considered in this model, which has a great influence on nanosecond laser ablation [66,67]. In order to consider the effects of target evaporation, phase explosion, plasma expansion and plasma shielding, the ablation process is divided into two stages: Before and after evaporation and the corresponding heat transfer model are established.…”

Section: Heat Conduction Equation For Two Different Stagesmentioning

confidence: 99%

A Model of Ultra-Short Pulsed Laser Ablation of Metal with Considering Plasma Shielding and Non-Fourier Effect

Tan

Wang

et al. 2018

Energies

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In this paper, a non-Fourier heat conduction model of ultra-short pulsed laser ablation of metal is established that takes into account the effect of the heat source, laser heating of the target, the evaporation and phase explosion of target material, the formation and expansion of the plasma plume, and interaction of the plasma plume with the incoming laser. Temperature dependent optical and thermophysical properties are also considered in the model due to the properties of the target will change over a wide range during the ultra-short pulsed laser ablation process. The results show that the plasma shielding has a great influence on the process of ultra-short pulsed laser ablation, especially at higher laser fluence. The non-Fourier effect has a great influence on the temperature characteristics and ablation depth of the target. The ultra-short pulsed laser ablation can effectively reduce the heat affected zone compared to nanosecond pulsed laser ablation. The comparison between the simulation results and the experimental results in the literature shows that the model with the plasma shielding and the non-Fourier effect can simulate the ultra-short pulsed laser ablation process better.

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Section: Heat Conduction Equation For Two Different Stagesmentioning

confidence: 99%

A Model of Ultra-Short Pulsed Laser Ablation of Metal with Considering Plasma Shielding and Non-Fourier Effect

Tan

Wang

et al. 2018

Energies

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“…As a result, the electrical conductivity experiences a sudden drop. [31][32][33][34] Following the work of Batanov et al, 32 certain authors treated the dielectric transition explicitly [35][36][37] and assumed a transparency front near 0:9 T c propagating through the target. This idea is quite attractive from both a computational as well as a physical point of view, since one can still attach an evaporation front to the hot metal.…”

Section: Introductionmentioning

confidence: 99%

The role of mass removal mechanisms in the onset of ns-laser induced plasma formation

Autrique

Clair

L’Hermite

et al. 2013

Journal of Applied Physics

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The present study focuses on the role of mass removal mechanisms in ns-laser ablation. A copper sample is placed in argon, initially set at standard pressure and temperature. Calculations are performed for a 6 ns laser pulse with a wavelength of 532 nm and laser fluences up to 10 J/cm 2. The transient behavior in and above the copper target is described by a hydrodynamic model. Transmission profiles and ablation depths are compared with experimental results and similar trends are found. Our calculations reveal an interesting self-inhibiting mechanism: volumetric mass removal in the supercritical region triggers plasma shielding and therefore stops proceeding. This self-limiting process indicates that volumetric mass removal does not necessarily result in large ablation depths. V

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“…Because of the spatially Table 1 Thermal and optical properties of copper, aluminum and iron used in the numerical model [28,31]. Gaussian shape laser pulse, the ablation depth decreases from the pulse center to the sides.…”

Section: Formalismmentioning

confidence: 99%

Numerical and experimental depth profile analyses of coated and attached layers by laser-induced breakdown spectroscopy

Ardakani

Tavassoli

2010

Spectrochimica Acta Part B: Atomic Spectroscopy

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Effect of the dielectric transition on laser-induced phase explosion in metals

Cited by 32 publications

References 10 publications

A Model of Ultra-Short Pulsed Laser Ablation of Metal with Considering Plasma Shielding and Non-Fourier Effect

A Model of Ultra-Short Pulsed Laser Ablation of Metal with Considering Plasma Shielding and Non-Fourier Effect

The role of mass removal mechanisms in the onset of ns-laser induced plasma formation

Numerical and experimental depth profile analyses of coated and attached layers by laser-induced breakdown spectroscopy

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