Spatial Evolution of Three-Wave Structure in Shocked Potassium Chloride

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The response of 100-oriented KCl single crystals having thickness ranged from 0.05 to 5 mm was studied in series of planar impact experiments with impact pressure higher than pressure of KCl transformation from B1 to B2 structure. Special attention was paid to providing the similar velocities of aluminum impactor in all shots. VISAR velocity records were obtained from free sample surface or from sample-PMMA window interface. The recorded velocity profiles have three-wave structure containing elastic El, low-pressure phase Ph1 and high-pressure phase Ph2 waves. The waves amplitudes were found decaying with the propagation time and corresponding relaxation times were found equal to 118, 64 and 136 nsec, respectively. The closeness of the relaxation times of Ph1 and Ph2 waves to the relaxation time of El wave allows us to assume that dislocation motion is responsible of the growth of nuclei of the transforming phase.
Original languageEnglish
Pages (from-to)217-220
JournalAIP Conference Proceedings
StatePublished - 1 Jul 2002


  • High Pressure
  • Phase Transformations
  • Potassium Chlorides
  • Potassium Compounds
  • Shock Waves
  • Single Crystals
  • Solid State
  • Solid-solid transitions
  • High-pressure and shock wave effects in solids and liquids


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