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2006 | 110 | 4 | 511-521
Article title

Modeling of Thermodiffusion Inertia in Metal Films Heated with Ultrashort Laser Pulses

Content
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Languages of publication
EN
Abstracts
EN
Previously, we considered the analytical solution of nonlinear diffusion equation in two-dimensional surface. This allows us to consider the same nonlinear heat conduction equation for metals heated by a picosecond laser. After fast thermalization (within a few femtoseconds) of the laser energy and electron excitation in the conductivity band, electrons ballistically diffuse and transfer their energies to the target atoms and equilibrium electrons from the conductivity band. In this case, we have thermal diffusion of nonequilibrium excited electrons and thermal inertia for thermodiffusion. The relaxation time of excited conductivity electrons is directly connected with thermal inertia and depends on electron-electron collision frequencies. The theoretical temperature surface plots for the thermodiffusion of excited electrons were obtained from analytical solutions of nonlinear thermodiffusion equations.
Keywords
EN
Publisher

Year
Volume
110
Issue
4
Pages
511-521
Physical description
Dates
published
2006-10
received
2006-06-26
Contributors
  • Faculty of Mathematics and Informatics,Šiauliai University, Višinskio 19, Šiauliai, 76351, Lithuania
author
  • Faculty of Mathematics and Informatics,Šiauliai University, Višinskio 19, Šiauliai, 76351, Lithuania
References
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Document Type
Publication order reference
Identifiers
YADDA identifier
bwmeta1.element.bwnjournal-article-appv110n408kz
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