Open AccessInvestigation of heat transfer in metal nanofilms irradiated with ultrashort laser pulses: two-temperature model
Author(s) -
G. V. Mikheeva,
A.V. Pashin
Publication year - 2021
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/2094/2/022023
Subject(s) - dimensionless quantity , irradiation , materials science , heat transfer , laser , finite difference method , thermal conductivity , thermal , metal , finite difference , electron , lattice (music) , crystal (programming language) , finite difference scheme , thermodynamics , mechanics , optics , composite material , physics , metallurgy , mathematical analysis , mathematics , quantum mechanics , programming language , computer science , nuclear physics , acoustics
A numerical study of heat transfer between an electron gas and a crystal lattice in a metal nanofilm under irradiation with an ultrashort laser pulse was carried out on the basis of a parabolic two-temperature model of thermal conductivity presented in a dimensionless form. For the numerical solution, the finite difference method was used using the explicit-implicit Crank-Nicholson scheme. As a result of the numerical study, it was found that with an increase in the thickness of the plate, the equilibrium temperature decreases, and the time for the onset of thermal equilibrium between the electrons and the crystal lattice increases.