Electron-ion equilibration in ultrafast heated graphite.

Electron-ion equilibration in ultrafast heated graphite.

We have employed fast electrons produced by intense laser illumination to isochorically heat thermal electrons in solid density carbon to temperatures of ∼10,000  K. Using time-resolved x-ray diffraction, the temperature evolution of the lattice ions is obtained through the Debye-Waller effect, and...

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Detalles Bibliográficos
Main Authors: White, T, Hartley, N, Borm, B, Crowley, B, Harris, J, Hochhaus, D, Kaempfer, T, Li, K, Neumayer, P, Pattison, L, Pfeifer, F, Richardson, S, Robinson, A, Uschmann, I, Gregori, G
Formato: Journal article
Idioma:English
Publicado: American Physical Society 2014
Descripción
Summary:We have employed fast electrons produced by intense laser illumination to isochorically heat thermal electrons in solid density carbon to temperatures of ∼10,000  K. Using time-resolved x-ray diffraction, the temperature evolution of the lattice ions is obtained through the Debye-Waller effect, and this directly relates to the electron-ion equilibration rate. This is shown to be considerably lower than predicted from ideal plasma models. We attribute this to strong ion coupling screening the electron-ion interaction.

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