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Open Access Publications from the University of California

Measurement of Electron-Ion Relaxation in Warm Dense Copper.

  • Author(s): Cho, BI
  • Ogitsu, T
  • Engelhorn, K
  • Correa, AA
  • Ping, Y
  • Lee, JW
  • Bae, LJ
  • Prendergast, D
  • Falcone, RW
  • Heimann, PA
  • et al.

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Experimental investigation of electron-ion coupling and electron heat capacity of copper in warm and dense states are presented. From time-resolved x-ray absorption spectroscopy, the temporal evolution of electron temperature is obtained for non-equilibrium warm dense copper heated by an intense femtosecond laser pulse. Electron heat capacity and electron-ion coupling are inferred from the initial electron temperature and its decrease over 10 ps. Data are compared with various theoretical models.

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