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- Title
Computer simulation of expansion of a carbon laser plasma after ablation in nitrogen atmosphere.
- Authors
Trofimov, V. A.; Shirokov, I. A.
- Abstract
Computer simulation is employed for analyzing the dynamics of plasma expansion in nitrogen under a pressure of 103 and 104 Pa after the action of a nanosecond laser pulse on a graphite plate for obtaining carbonitride nanofilms with the help of laser ablation technology. The binary gas mixture is described using a macroscopic quasi-gasdynamic model taking into account momentum and energy transfer between mixture components. The results of simulation are compared for various initial values of temperature and pressure of the laser jet with the results of direct Monte Carlo simulation and with experimental data. The possibility of controlling the shock wave propagation modes after ablation by varying the initial values of gasdynamic parameters is demonstrated. The effect of nitrogen atmosphere on the propagation of the laser jet is studied.
- Subjects
COMPUTER simulation; ELECTROMECHANICAL analogies; SIMULATION methods &; models; MATHEMATICAL models; LASER plasmas; LASER beams
- Publication
Technical Physics, 2009, Vol 54, Issue 7, p974
- ISSN
1063-7842
- Publication type
Article
- DOI
10.1134/S106378420907007X