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Formation of nanocavities in the surface layer of an aluminum target irradiated by a femtosecond laser pulse

  • Plasma, Hydro- and Gas Dynamics
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Abstract

It has been revealed experimentally that nanocavities remain inside a surface layer of aluminum after action of a femtosecond laser pulse. This result is in agreement with numerical simulation. A detailed picture of melting, formation of expansion and compression waves, and bubble nucleation in the stretched melt has been reconstructed through atomistic simulation. It has been shown that the bubbles do not fully collapse but remain as frozen disk-shaped nanocavities upon recrystallization of the melt. The formation of a porous metal with small voids is very important for understanding the physics of laser exposure and may have significant applications.

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Authors and Affiliations

  1. Joint Institute for High Temperatures, Russian Academy of Sciences, ul. Izhorskaya 13/19, Moscow, 125412, Russia

    S. I. Ashitkov, M. B. Agranat & V. E. Fortov

  2. Landau Institute for Theoretical Physics, Russian Academy of Sciences, Chernogolovka, Moscow region, 142432, Russia

    N. A. Inogamov & S. I. Anisimov

  3. Department of Physics, University of South Florida, Tampa, FL, 33620, USA

    V. V. Zhakhovskii & I. I. Oleinik

  4. Nanomaterials and Nanomanufacturing Research Center, University of South Florida, Tampa, FL, 33620, USA

    Yu. N. Emirov

Authors
  1. S. I. Ashitkov
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  2. N. A. Inogamov
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  3. V. V. Zhakhovskii
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  4. Yu. N. Emirov
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  5. M. B. Agranat
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  6. I. I. Oleinik
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  7. S. I. Anisimov
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  8. V. E. Fortov
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Corresponding author

Correspondence to N. A. Inogamov.

Additional information

Original Russian Text © S.I. Ashitkov, N.A. Inogamov, V.V. Zhakhovskii, Yu.N. Emirov, M.B. Agranat, I.I. Oleinik, S.I. Anisimov, V.E. Fortov, 2012, published in Pis’ma v Zhurnal Eksperimental’noi i Teoreticheskoi Fiziki, 2012, Vol. 95, No. 4, pp. 192–197.

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Ashitkov, S.I., Inogamov, N.A., Zhakhovskii, V.V. et al. Formation of nanocavities in the surface layer of an aluminum target irradiated by a femtosecond laser pulse. Jetp Lett. 95, 176–181 (2012). https://doi.org/10.1134/S0021364012040042

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  • DOI: https://doi.org/10.1134/S0021364012040042

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