TITLE

Modeling of laser induced plasma expansion in the presence of non-Maxwellian electrons

AUTHOR(S)
Bennaceur-Doumaz, D.; Djebli, M.
PUB. DATE
July 2010
SOURCE
Physics of Plasmas;Jul2010, Vol. 17 Issue 7, p074501
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The one-dimensional expansion into vacuum of ion-electron plasma produced by laser ablation is investigated. The ions considered as an ideal fluid are governed by a fluid model where charge quasineutrality is assumed to prevail, while electron density follows a non-Maxwellian distribution. Showing that the expansion can be described by a self-similar solution, the resulting nonlinear Euler equations are solved numerically. It is found that the deviation of the electrons from Maxwellian distribution gives rise to new asymptotic solutions of physical interest affecting the density and velocity of plasma expansion.
ACCESSION #
52616113

 

Related Articles

  • A plasma model combined with an improved two-temperature equation for ultrafast laser ablation of dielectrics. Jiang, Lan; Tsai, Hai-Lung // Journal of Applied Physics;Nov2008, Vol. 104 Issue 9, p093101 

    It remains a big challenge to theoretically predict the material removal mechanism in femtosecond laser ablation. To bypass this unresolved problem, many calculations of femtosecond laser ablation of nonmetals have been based on the free electron density distribution without the actual...

  • Electronic temperature and density of the plasma produced by nanosecond ultraviolet laser ablation of LiF. Gordillo-Vázquez, F. J.; Perea, A.; McKiernan, A. P.; Afonso, C. N. // Applied Physics Letters;5/2/2005, Vol. 86 Issue 18, p181501 

    Optical emission spectroscopy is used to investigate the spatial evolution of the electron temperature (Te) and electron density (Ne) in the plasma generated by laser ablation in a vacuum of a wide-band-gap material, such as LiF, with a pulsed 193 nm excimer laser operating at a fluence of 1.5 J...

  • Modeling the time evolution of laser-induced plasmas for various pulse durations and fluences. Laville, S.; Vidai, F; Johnston, T. W.; Chaker, M.; Drogoff, B. Le; Barthélemy, O.; Margot, J.; Sabsabi, M. // Physics of Plasmas;May2004, Vol. 11 Issue 5, p2182 

    In this paper, the expansion in ambient air of a plasma produced by laser ablation from an aluminum target is studied with the help of a one-dimensional fluid code that includes a consistent description of ablation and of the subsequent plasma expansion. Two limiting cases for the expansion...

  • Characterization Of Nano-Second Laser Induced Plasmas From Al Target In Air At Atmospheric Pressure. Hegazy, H.; Abdel-Rahim, F. M.; Nossair, A. M. A.; Allam, S. H.; El-Sherbini, Th. M. // AIP Conference Proceedings;9/23/2008, Vol. 1047 Issue 1, p167 

    In the present work we study the effect of the laser beam energy on the properties of the plasma generated by focusing an intense laser beam on Al solid target in air at atmospheric pressure. Plasma is generated using a Nd:YAG pulsed laser at 1064 nm wavelength, 6 ns pulse duration with a...

  • Transient reflectivity and transmission changes during plasma formation and ablation in fused silica induced by femtosecond laser pulses. Puerto, D.; Gawelda, W.; Siegel, J.; Bonse, J.; Bachelier, G.; Solis, J. // Applied Physics A: Materials Science & Processing;Sep2008, Vol. 92 Issue 4, p803 

    We have studied the plasma formation and ablation dynamics in fused silica upon irradiation with a single 120 fs laser pulse at 800 nm by using fs-resolved pump-probe microscope. It allows recording images of the laser-excited surface at different time delays after the arrival of the pump pulse....

  • Spectroscopic analysis of the excitation transfer from background air to diffusing aluminum laser produced plasma. Ribière, M.; Karabourniotis, D.; Chéron, B. G. // Journal of Applied Physics;Apr2009, Vol. 105 Issue 8, p083309 

    During the relaxation of the plasma plume generated by laser ablation of an aluminum target, a pronounced intensity enhancement is observed at the central wavelength of the 396.15 nm self-reversed resonant line. This spectral special feature is analyzed and related to the interaction of the...

  • Ultra-Short Laser Absorption In Solid Targets. Harfouche, A.; Bendib, A. // AIP Conference Proceedings;9/23/2008, Vol. 1047 Issue 1, p159 

    With the rapid development and continuously improving technology of subpicosecond laser pulse generation, new interesting physical problems are now investigated. Among them the laser light absorption in solid targets. During the interaction with solid targets, high intensity laser pulses are...

  • Characterization of ablated species in laser-induced plasma plume. Furusawa, Hideki; Sakka, Tetsuo; Ogata, Yukio H. // Journal of Applied Physics;7/15/2004, Vol. 96 Issue 2, p975 

    Plasma electron density and atomic population densities in the plasma plume produced by a laser ablation of aluminum metal were determined in various ambient gases at relatively high pressures. The method is based on the fit of a spectral line profile of Al(I)²P°-²S emission to the...

  • Spatial and temporal studies of laser ablated ZnO plasma. Joshy, N. V.; Saji, K. J.; Jayaraj, M. K. // Journal of Applied Physics;Sep2008, Vol. 104 Issue 5, p053307 

    Gallium doped zinc oxide was ablated using the third harmonics of Nd:YAG laser at various laser fluences and nitrous oxide ambient gas pressures. Optical emission spectroscopic technique was used to determine the plasma parameters. Spatial variation of electron number density (Ne) was determined...

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics