Broadband dielectric function of non-equilibrium warm dense gold

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We report on the first single-state measurement of the broadband (450-800 nm) dielectric function of gold isochorically heated by a femtosecond laser pulse to energy densities of 10{sup 6}-10{sup 7} J/kg. A Drude and an inter-band component are clearly seen in the imaginary part of the dielectric function. The Drude component increases with energy density while the inter-band component shows both enhancement and red shift. This is in strong disagreement with predictions of a recent calculation of dielectric function based on limited k-point sampling.

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Ping, Y; Hanson, D; Koslow, I; Ogitsu, T; Prendergast, D; Schwegler, E et al. April 25, 2006.

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We report on the first single-state measurement of the broadband (450-800 nm) dielectric function of gold isochorically heated by a femtosecond laser pulse to energy densities of 10{sup 6}-10{sup 7} J/kg. A Drude and an inter-band component are clearly seen in the imaginary part of the dielectric function. The Drude component increases with energy density while the inter-band component shows both enhancement and red shift. This is in strong disagreement with predictions of a recent calculation of dielectric function based on limited k-point sampling.

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PDF-file: 6 pages; size: 0 Kbytes

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  • Journal Name: Physical Review Letters, vol. 96, N/A, June 26, 2006, pp. 255003; Journal Volume: 96

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  • Report No.: UCRL-JRNL-221126
  • Grant Number: W-7405-ENG-48
  • Office of Scientific & Technical Information Report Number: 895708
  • Archival Resource Key: ark:/67531/metadc889993

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  • April 25, 2006

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  • Sept. 22, 2016, 2:13 a.m.

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  • Dec. 6, 2016, 7:33 p.m.

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Ping, Y; Hanson, D; Koslow, I; Ogitsu, T; Prendergast, D; Schwegler, E et al. Broadband dielectric function of non-equilibrium warm dense gold, article, April 25, 2006; Livermore, California. (digital.library.unt.edu/ark:/67531/metadc889993/: accessed October 18, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.