Abstract:
The dynamics of gas expansion during nanosecond laser evaporation into vacuum is studied. The problem is considered in an axisymmetric formulation for a wide range of parameters: the number of evaporated monolayers and the size of the evaporation spot. To obtain a reliable numerical solution, two different kinetic approaches are used – the direct simulation Monte Carlo method and solution of the BGK model kinetic equation. The change in the shape of the cloud of evaporated substance during the expansion process is analyzed. The strong influence of the degree of rarefaction on the shape of the forming cloud is shown. When a large number of monolayers evaporate, good agreement with the continuum solution is observed.
Citation:
A. A. Morozov, V. A. Titarev, “Evolution of the shape of a gas cloud during pulsed laser evaporation into vacuum: Direct simulation Monte Carlo and the solution of a model equation”, Zh. Vychisl. Mat. Mat. Fiz., 63:12 (2023), 1960–1972; Comput. Math. Math. Phys., 63:12 (2023), 2244–2256
\Bibitem{MorTit23}
\by A.~A.~Morozov, V.~A.~Titarev
\paper Evolution of the shape of a gas cloud during pulsed laser evaporation into vacuum: Direct simulation Monte Carlo and the solution of a model equation
\jour Zh. Vychisl. Mat. Mat. Fiz.
\yr 2023
\vol 63
\issue 12
\pages 1960--1972
\mathnet{http://mi.mathnet.ru/zvmmf11663}
\crossref{https://doi.org/10.31857/S0044466923120207}
\elib{https://elibrary.ru/item.asp?id=54912953}
\transl
\jour Comput. Math. Math. Phys.
\yr 2023
\vol 63
\issue 12
\pages 2244--2256
\crossref{https://doi.org/10.1134/S0965542523120151}
Linking options:
https://www.mathnet.ru/eng/zvmmf11663
https://www.mathnet.ru/eng/zvmmf/v63/i12/p1960
This publication is cited in the following 3 articles:
Jian Wu, Ying Zhou, Minxin Chen, Xingwen Li, “Numerical modeling and simulation on nanosecond laser-target interactions”, J. Phys. D: Appl. Phys., 58:14 (2025), 143004
Danil A. Kolosovsky, Timur M. Zalyalov, Sergei A. Ponomarev, Nikolay B. Miskiv, Alexey A. Morozov, Yuri G. Shukhov, Alexander V. Shevlyagin, Aleksandr A. Kuchmizhak, Sergey V. Starinskiy, “Adhesion layer free room-temperature pulsed laser deposition of ultrathin Au films”, Applied Surface Science, 2025, 163077
A. A. Morozov, V. A. Titarev, “Kinetic study of time-of-flight distributions during pulsed laser evaporation into vacuum”, Physics of Fluids, 36:11 (2024)