DocumentCode :
2557522
Title :
AC conductivity of non-equilibrium warm dense gold
Author :
Tsui, Y.Y. ; Holst, B. ; Chen, Z. ; Kirkwood, S. ; Sametoglu, V. ; Reid, M. ; Recoules, V. ; Ng, A.
Author_Institution :
University of Alberta, Canada
fYear :
2012
fDate :
8-13 July 2012
Abstract :
Summary form only given. In this paper we will present results of a new study on AC conductivity of non-equilibrium warm dense gold. In the experiment, freestanding 30nm-thick gold foils are excited by 400nm, 45fs (FWHM) laser pulses to energy densities up to ∼4MJ/kg. Temporal evolution in AC conductivity of the resulting state is determined from simultaneous measurements of reflection and transmission of a chirped pulse probe at 800nm. This yields two important benchmarks for comparison with theory. The conductivity value at the end of the femtosecond laser pulse is a measure of its dependence on electron temperature as the ions remain cold. Subsequent changes then provide a measure of conductivity as a function of both electron and ion temperatures as thermal equilibration between electron and ion progresses. These data are compared with ab-initio quantum simulations.
Keywords :
Conductivity; Conductivity measurement; Gold; Laser theory; Measurement by laser beam; Pulse measurements; Temperature measurement;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Plasma Science (ICOPS), 2012 Abstracts IEEE International Conference on
Conference_Location :
Edinburgh
ISSN :
0730-9244
Print_ISBN :
978-1-4577-2127-4
Electronic_ISBN :
0730-9244
Type :
conf
DOI :
10.1109/PLASMA.2012.6383513
Filename :
6383513
Link To Document :
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