Influence of an increase in the transparency on the intense evaporation of metals by optical radiation

Karapetyan, R. V.; Samokhin, A. A.

doi:10.1070/qe1975v004n09abeh011557

Cited by 6 publications

(9 citation statements)

References 1 publication

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“…In the case of metal-dielectric transition parameter y is not constant in the steady-state regime and the temperature distribution has the form [7,8] which is shown schematically in Fig. 2.…”

Section: Steady-state Regime Of Metal-dielectric Transition In Mercurymentioning

confidence: 99%

“…At point z 0 = 0 boundary conditions (2) are used, and at the points z 1 and z 2 the following boundary conditions are used [7,8].…”

Section: Steady-state Regime Of Metal-dielectric Transition In Mercurymentioning

confidence: 99%

“…where T md is a metal-dielectric transition temperature. Note that the last equality in (10) is valid due to the exponential form of (7). The coefficients b i , c i in (7) for the first (metal) layer is determined by the evaporative boundary conditions (2) and are given below…”

Section: Steady-state Regime Of Metal-dielectric Transition In Mercurymentioning

confidence: 99%

“…In the present paper possible manifestations of this transition for mercury are analyzed in the framework of simplified one-dimensional approach using the previous results [7,8] and recent experimental investigation [11].…”

Section: Introductionmentioning

confidence: 97%

“…For this reason, further theoretical and experimental investigations of intense laser-metal interaction are necessary including the possibility of metal-dielectric transition which is also discussed in many papers (see e.g. [4][5][6][7][8][9][10][11] and references therein).…”

Section: Introductionmentioning

confidence: 99%

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On metal-dielectric transition in laser ablation modeling

Samokhin¹,

Zubko²

2019

MathMon

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Laser ablation modeling taking into account possibility of metal-dielectric transition in the irradiated metal targets is considered. In the framework of 1-D heat conduction approach it is shown that the steady-state vaporization regime with metaldielectric transition in mercury can be observed only in very narrow laser intensity interval. From analysis of recent experimental results on mercury ablation with nanosecond laser pulses it follows that the results can not be described in the framework of 1-D approach.

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Section: Steady-state Regime Of Metal-dielectric Transition In Mercurymentioning

confidence: 99%

“…At point z 0 = 0 boundary conditions (2) are used, and at the points z 1 and z 2 the following boundary conditions are used [7,8].…”

Section: Steady-state Regime Of Metal-dielectric Transition In Mercurymentioning

confidence: 99%

Section: Steady-state Regime Of Metal-dielectric Transition In Mercurymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

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On metal-dielectric transition in laser ablation modeling

Samokhin¹,

Zubko²

2019

MathMon

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On acoustical registration of irradiated surface displacement during nanosecond laser-metal interaction and metal–nonmetal transition effect

Samokhin

Shashkov

Vorobiev

et al. 2020

Applied Surface Science

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Laser ablation induced vapor plume expansion into a background gas. II. Experimental analysis

Wen

Mao

Greif

et al. 2007

Journal of Applied Physics

102

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Laser ablation of copper with a 4ns laser pulse at 1064nm was studied with a series of synchronized shadowgraph (100fs laser pulses at 400nm) and emission images (spectral line at 515nm). Data were obtained at two laser pulse energies (10 and 30mJ) and in three background gases (He, Ne, and Ar) at atmospheric pressure. The laser energy conversion ratio and the amount of sample vaporized for ablation in each condition were obtained by the theoretical analysis reported in paper I from trajectories of the external shock wave, internal shock wave, and contact surface between the Cu vapor and the background gas. All three quantities were measured from shadowgraph and emission images. The results showed that E, the amount of energy that is absorbed by the copper vapor, decreases as the atomic mass of the background gas increases; and M, the mass of the sample converted into vapor, is almost independent of the background gas [Horn et al., Appl. Surf. Sci. 182, 91 (2001)]. A physical interpretation is given based on the phenomena observed in shadowgraph and emission images during the first tens of nanoseconds after the beginning of the laser pulse for ablation in different background gases. In addition, an internal shock wave was observed in the emission images during the first tens of nanoseconds after the laser pulse, which strikes the surface and should be one of the mechanisms inducing the liquid sample ejection. Also, a significant vortex ring near the target was observed in emission images at longer times after the laser pulse (>100ns) which distorts the otherwise hemispherical expansion of the vapor plume.

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Influence of an increase in the transparency on the intense evaporation of metals by optical radiation

Cited by 6 publications

References 1 publication

On metal-dielectric transition in laser ablation modeling

On metal-dielectric transition in laser ablation modeling

On acoustical registration of irradiated surface displacement during nanosecond laser-metal interaction and metal–nonmetal transition effect

Laser ablation induced vapor plume expansion into a background gas. II. Experimental analysis

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