Applied Physics A

, Volume 79, Issue 4, pp 1047–1050

Electron and phonon relaxation in metal films perturbed by a femtosecond laser pulse


DOI: 10.1007/s00339-004-2625-y

Cite this article as:
Pietanza, L., Colonna, G., Longo, S. et al. Appl. Phys. A (2004) 79: 1047. doi:10.1007/s00339-004-2625-y


A theoretical investigation of the electron and phonon time-dependent distributions in an Ag film subjected to a femtosecond laser pulse has been carried out. A system of two coupled time-dependent Boltzmann equations, describing electron and phonon dynamics, has been numerically solved. In the electron Boltzmann equation, electron–electron and electron–phonon collision integrals are considered together with a source term for laser perturbation. In the phonon Boltzmann equation, only electron–phonon collisions are considered, neglecting laser perturbation and phonon–phonon collisions. Screening of the interactions has been accounted for in both the electron–electron and the electron–phonon collisions. The results show the simultaneous electron and phonon time-dependent distributions from the initial non-equilibrium behaviour up to the establishment of a new final equilibrium condition.

Copyright information

© Springer-Verlag 2004

Authors and Affiliations

  • L.D. Pietanza
    • 1
  • G. Colonna
    • 2
  • S. Longo
    • 1
  • M. Capitelli
    • 1
    • 2
  1. 1.Dipartimento di ChimicaUniversità degli Studi di BariBariItaly
  2. 2.sect. BariIMIP-CNRBariItaly

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