Solution of two-temperature thermal diffusion model of laser–metal interactions

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DOIResolve DOI: http://doi.org/10.2351/1.1619998
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TypeArticle
Journal titleJournal of Laser Applications
ISSN1938-1387
Volume15
Issue4
Pages273278; # of pages: 6
Subjectthermal diffusion; thermal models; heat capacity; laser ablation; numerical modeling
AbstractThe two temperature coupled equations,modelingthermal diffusion during laser-induced ablation of metals, are solved under the assumptions that the electron and the lattice heat capacities, and the thermal conductivity remain constant in the process. In view of its practical value, the solution is initially obtained for the energy sources with a Gaussian distribution. The solution is then generalized to include a larger class of source terms for comparison with other results. Present analysis is valid under less restrictive conditions than frequently imposed in the literature. In particular, the solution is valid for realistic source terms and describes the process for ultrashort to nanosecond pulse-width regimes. More general results obtained here retain the attractive features of other approximate solutions available elsewhere and reduce to them under the respective conditions. Predictions of the present model agree well with the experimental observations reported in the literature.
Publication date
LanguageEnglish
AffiliationNRC Industrial Materials Institute; National Research Council Canada
Peer reviewedYes
NPARC number21272982
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Record identifierdb7da271-e60a-4390-847f-22047b08d319
Record created2014-12-03
Record modified2016-05-09
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