Bs. Yilbas et M. Sami, LASER-HEATING MECHANISMS INCLUDING EVAPORATION PROCESS-SEMICLASSICAL AND KINETIC-THEORY APPROACHES, JPN J A P 1, 34(12A), 1995, pp. 6391-6400
Microscopic level study of the laser heating process is essential to p
redict the temperature profiles accurately. Consequently, the present
work deals with the analysis of the heating mechanism on a microscopic
scale through semiclassical and kinetic theory approaches. In the ana
lysis, statistical and quantum behaviour of electrons, phonons, vacanc
ies and molecules are considered. The probability of collision of each
species is taken into account to describe the conduction, melting and
evaporation processes occurring due to laser irradiation. A numerical
method using the explicit scheme is introduced to solve the energy eq
uations resulting fi om both approaches. Finally, the temperature prof
iles predicted from both approaches are compared to the experimentally
obtained temperature data. It is found that the results obtained from
kinetic theory are in good agreement with the experimentally obtained
temperature data.