Electron-Ion Equilibration in Ultrafast Heated Graphite

被引：48

作者：

White, T. G. ^{[1
]}

Hartley, N. J. ^{[1
]}

Borm, B. ^{[2
]}

Crowley, B. J. B. ^{[1
,3
]}

Harris, J. W. O. ^{[3
]}

Hochhaus, D. C. ^{[4
,5
]}

Kaempfer, T. ^{[6
]}

Li, K. ^{[4
,5
]}

Neumayer, P. ^{[4
,5
]}

Pattison, L. K. ^{[3
]}

Pfeifer, F. ^{[2
]}

Richardson, S. ^{[1
,3
]}

Robinson, A. P. L. ^{[7
]}

Uschmann, I. ^{[6
]}

Gregori, G. ^{[1
]}

机构：

[1] Univ Oxford, Dept Phys, Oxford OX1 3PU, England

[2] Goethe Univ Frankfurt, D-60438 Frankfurt, Germany

[3] AWE, Reading RG7 4PR, Berks, England

[4] GSI Helmholtzzentrum Schwerionenforsch, ExtreMe Matter Inst EMMI, D-64291 Darmstadt, Germany

[5] GSI Helmholtzzentrum Schwerionenforsch, Div Res, D-64291 Darmstadt, Germany

[6] Helmholtzinst Jena, D-07743 Jena, Germany

[7] Rutherford Appleton Lab, STFC, Cent Laser Facil, Didcot OX11 0QX, Oxon, England

来源：

PHYSICAL REVIEW LETTERS | 2014年 / 112卷 / 14期

基金：

英国工程与自然科学研究理事会;

关键词：

ENERGY RELAXATION; DENSE MATTER; PLASMA; SCATTERING;

D O I：

10.1103/PhysRevLett.112.145005

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We have employed fast electrons produced by intense laser illumination to isochorically heat thermal electrons in solid density carbon to temperatures of similar to 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.

引用

页数：5

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