JETP Letters

, Volume 93, Issue 4, pp 226–232 | Cite as

Superelasticity and the propagation of shock waves in crystals

  • N. A. Inogamov
  • V. V. Zhakhovskii
  • V. A. Khokhlov
  • V. V. Shepelev
Condensed Matter

Abstract

The separation of a shock wave into an elastic precursor and a plastic wave is a characteristic phenomenon occurring only in solid media. The existence of the elastic shock wave at pressures p ≈ 10 GPa, which is one or two orders of magnitude higher than the dynamic elastic limit, has been detected in recent numerical calculations and a femtosecond laser experiment. The plastic shock wave has no time to be formed in these ultrashort waves at p ≈ 10 GPa. The processes of the formation and propagation of the elastic and plastic waves in aluminum at higher pressures obtained by means of femtosecond lasers have been analyzed in this work. It has been found that the elastic precursor survives even under the conditions when the pressure behind the plastic front reaches a giant value p ∼ 1 Mbar at which the melting of the metal begins. It has been shown that superelasticity should be taken into account to correctly interpret the preceding laser experiments.

Keywords

Shock Wave JETP Letter Pump Pulse Elastic Zone Plastic Wave 

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Copyright information

© Pleiades Publishing, Ltd. 2011

Authors and Affiliations

  • N. A. Inogamov
    • 1
  • V. V. Zhakhovskii
    • 2
    • 3
  • V. A. Khokhlov
    • 1
  • V. V. Shepelev
    • 4
  1. 1.Landau Institute for Theoretical PhysicsRussian Academy of SciencesChernogolovka, Moscow regionRussia
  2. 2.Joint Institute for High TemperaturesRussian Academy of SciencesMoscowRussia
  3. 3.Department of PhysicsUniversity of South FloridaTampaUSA
  4. 4.Institute for Computer Aided DesignRussian Academy of SciencesMoscowRussia

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