High-speed laser ablation of metal with pico- and subpicosecond pulses

Mazhukin, V. I.; Demin, Mikhail Mikhailovich; Shapranov, A. V.

doi:10.1016/j.apsusc.2014.01.111

Cited by 31 publications

(11 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…One of the ways to simulate this situation is a continuum approximation with the two-temperature equation of state. [15][16][17] Such approach is a powerful tool for study of the surface modification by laser pulse. Nevertheless, this method does not take into account the phenomena existing at the atomistic level (such as decay of metastable phase or nucleation) that are essential for correct description of the surface modifications at threshold fluences.…”

Section: Introductionmentioning

confidence: 99%

Atomistic simulation of laser-pulse surface modification: Predictions of models with various length and time scales

Starikov

Pisarev

2015

Journal of Applied Physics

View full text Add to dashboard Cite

Articles you may be interested inThe origins of pressure-induced phase transformations during the surface texturing of silicon using femtosecond laser irradiation J. Appl. Phys. 112, 083518 (2012); 10.1063/1.4759140Experimental study of femtosecond laser-stimulated electrical discharges in small gaps and surface modifications Space and time resolved temperature measurements in laser pulse-produced metal melts Rev.In this work, the femtosecond laser pulse modification of surface is studied for aluminium (Al) and gold (Au) by use of two-temperature atomistic simulation. The results are obtained for various atomistic models with different scales: from pseudo-one-dimensional to full-scale three-dimensional simulation. The surface modification after laser irradiation can be caused by ablation and melting. For low energy laser pulses, the nanoscale ripples may be induced on a surface by melting without laser ablation. In this case, nanoscale changes of the surface are due to a splash of molten metal under temperature gradient. Laser ablation occurs at a higher pulse energy when a crater is formed on the surface. There are essential differences between Al ablation and Au ablation. In the first step of shock-wave induced ablation, swelling and void formation occur for both metals. However, the simulation of ablation in gold shows an additional athermal type of ablation that is associated with electron pressure relaxation. This type of ablation takes place at the surface layer, at a depth of several nanometers, and does not induce swelling. V C 2015 AIP Publishing LLC. JOURNAL OF APPLIED PHYSICS 117, 135901 (2015) [This article is copyrighted as indicated in the article. Reuse of AIP content is subject to the terms at: http://scitation.aip.org/termsconditions. Downloaded to ] IP: 93.175.4.208 On: Wed, 01 Apr 2015 17:44:27 135901-2 S. V. Starikov and V. V. Pisarev J. Appl. Phys. 117, 135901 (2015) [This article is copyrighted as indicated in the article. Reuse of AIP content is subject to the terms at: http://scitation.aip.org/termsconditions. Downloaded to ] IP: 93.175.4.208 On: Wed, 01 Apr 2015 17:44:27 135901-3 S. V. Starikov and V. V. Pisarev J. Appl. Phys. 117, 135901 (2015) [This article is copyrighted as indicated in the article. Reuse of AIP content is subject to the terms at: http://scitation.aip.org/termsconditions. Downloaded to ] IP: 93.175.4.208 On: Wed, 01 Apr 2015 17:44:27 135901-4 S. V. Starikov and V. V. Pisarev J. Appl. Phys. 117, 135901 (2015) [This article is copyrighted as indicated in the article. Reuse of AIP content is subject to the terms at: http://scitation.aip.org/termsconditions. Downloaded to ] IP: 93.175.4.208 On: Wed, 01 Apr 2015 17:44:27 135901-5 S. V. Starikov and V. V. Pisarev J. Appl. Phys. 117, 135901 (2015) [This article is copyrighted as indicated in the article. Reuse of AIP content is subject to the terms at: http://scitation.aip.org/termsconditions. Downloaded to ] IP: 93.175.4.208 On: Wed, 01 Apr 2015 17:44:27 135901-6 S. V. Starikov and V. V. Pisarev J. Appl. Phys. 117, 135901...

show abstract

Section: Introductionmentioning

confidence: 99%

Atomistic simulation of laser-pulse surface modification: Predictions of models with various length and time scales

Starikov

Pisarev

2015

Journal of Applied Physics

View full text Add to dashboard Cite

show abstract

“…It should be noted that in explosive boiling regimes under investigation, cavity formation takes place in the region of positive values of pressure generated by homogeneous nucleation in superheated liquid phase, in contrast to the case of a series of spalles [57] arising in the region of negative pressures in unloading wave upon action to metal targets of ultrashort picofemtosecond laser pulses.…”

Section: Resultsmentioning

confidence: 99%

“…For fast phase transitions, heterogeneous melting model consists of a system of equations expressing three conservation laws: mass, momentum, and energy supplemented by kinetic condition for the velocity of melting front υ sℓ [57] obtained from molecular-kinetic theory [58] and which is the main characteristic of the process melting-crystallization. In a stationary (laboratory) coordinate system, surface melting-crystallization model written on moving interface of melting x=Г sℓ (t) can be represented as:…”

Section: Left Fixed Boundary X = г Smentioning

confidence: 99%

“…Homogeneous mechanisms of phase transformations are characterized by nucleation of a new phase in a certain volume of superheated/supercooled matter. Representing them in continuum hydrodynamic models requires considerable additional efforts [57,76] associated with formation of a cavity filled with vapor within a condensed medium.…”

Section: Model Of Volumetric Boiling Of Liquid Phase Heated By a Lasementioning

confidence: 99%

See 1 more Smart Citation

Nanosecond Laser Ablation: Mathematical Models, Computational Algorithms, Modeling

Mazhukin¹

2017

Laser Ablation - From Fundamentals to Applications

View full text Add to dashboard Cite

The basic mathematical models, computational algorithms, and results of mathematical modeling of various modes of laser action on metals are considered. It is shown that for mathematical description and analysis of the processes of laser heating, melting, and evaporation of condensed media, various theoretical approaches are used: continuum, kinetic, atomistic, etc. Each of them has its own field of applicability, its advantages, and disadvantages. Mathematical description of ns-laser ablation is usually carried out within the framework of continuum approach in the form of hydrodynamic models that take into account reaction of irradiated material to varying density, pressure, and energy both in the target and in the vapor-gas medium. Within the framework of continuum approach, a multiphase, multifront hydrodynamic model and computational algorithm were constructed that were designed for modeling ns-PLA of metal targets embedded in gaseous media. It is shown that proposed model and computational algorithm allow to carry out the simulation of interrelated mechanisms of heterogeneous and homogeneous evaporation of metals manifested as a series of explosive boiling. Modeling has shown that explosive boiling in metals occurs due to the presence of a near-surface temperature maximum. It has been established that in ns-PLA, exposure regimes can be realized in which a phase explosion is the main mechanism of material removal. The verification of reliability of obtained results was carried out by comparing experimental data and calculations with atomistic models.

show abstract

“…For example, Mazhukin et al investigated nanosecond laser ablation in subcritical and transcritical modes [8]. They also conducted a simulation of laser explosive effervescence of metal [9]. We assume that the ablation process has already happened, the substance has evaporated from the surface of the target.…”

Section: Numerical Modelmentioning

confidence: 99%

MHD Simulation Of Laboratory Jets

Toropina¹,

Бисноватый-Коган²,

Moiseenko³

2020

Proceedings of High Energy Phenomena in Relativistic Outflows VII — PoS(HEPRO VII)

View full text Add to dashboard Cite

We present the results of numerical simulations of the formation and development of magnetized jets. We simulate a plasma flow, for which we chose a numerical method, boundary and initial conditions. We investigate the picture of the flow for different magnetic field configurations. We compared these results with the experiment on a NEODIM laser installation. In the absence of a magnetic field, a substantial expansion of the jet occurs. In the presence of a strong poloidal magnetic field, the jet expands only slightly, which confirms the possibility of a magnetic collimation mechanism for astrophysical jets. Under certain values of the magnetic field a ring structure may form. The opening angle of these simulated structures approximates the results of the laboratory experiment.

show abstract

High-speed laser ablation of metal with pico- and subpicosecond pulses

Cited by 31 publications

References 22 publications

Atomistic simulation of laser-pulse surface modification: Predictions of models with various length and time scales

Atomistic simulation of laser-pulse surface modification: Predictions of models with various length and time scales

Nanosecond Laser Ablation: Mathematical Models, Computational Algorithms, Modeling

MHD Simulation Of Laboratory Jets

Contact Info

Product

Resources

About