Introduction
Laser ablation is a frequently used method of removing material from a solid surface by irradiating it with a powerful laser beam. It may be applied to machining materials, cleaning contaminated surfaces, deposition of thin coatings on surfaces etc. High energy, short duration laser pulse, focused on a small area of the target surface heats and evaporates it, forming eventually a plume which moves outwards from the target with high speed. The behaviour of the plume may influence the quality of the deposited layer, which is important if deposition is the goal of the process. This is particularly the case if the deposited material consists of disparate mass components. The light components move faster than the heavy ones and tend to spread on larger area of the substrate. In consequence the stoichiometry of the deposited material is not preserved. To improve the situation, the deposition process may be performed in the atmosphere of an ambient gas, which decelerates both the motion of the plume as a whole and its expansion. Deceleration is stronger for light components of the plume, which makes the expanding plume more uniform.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
References
Zeldovich Ya, B., Raizer Yu, P.: Physics of Shock Waves and High-Temperature Hydrodynamic Phenomena. Academic, New York (1966)
Arnold, N., Gruber, J., Heitz, J.: Spherical expansion of the vapor plume into ambient gas: an analytical model. Appl. Phys. AÂ 69(suppl.), S87 (1999)
Knight, C.J.: Theoretical modelling of rapid surface vaporization with back pressure. AIAA Journal 17, 519 (1979)
Bird, G.A.: Molecular Gas Dynamics. Clarendon Press, Oxford (1976)
Yanitskiy, V.E., Belotserkovskiy, O.M.: Yanitskiy VE, Belotserkovskiy OM (1975) The statistical method of particles in cells for the solution of problems of the dynamics of a rarefied gas. Part I, Zh. Vychisl. Mat. Mat. Fiz. 15, 1195–1208; Part II, Zh. Vychisl. Mat. Mat. Fiz. 15, 1553–1567 (1975)
Stallcop, J.R., Partridge, H., Pradhan, A., Levin, E.: Potential Energies and Collision Integrals for Interactions of Carbon and Nitrogen Atoms. Journal of Thermophysics and Heat Transfer 14, 480 (2000)
Levin, E., Partridge, H., Stallcop, J.R.: Collision Integrals and High Temperature Transport Properties for N–N, O–O, and N–O. Journal of Thermophysics and Heat Transfer 4, 469 (1990)
Stallcop, J.R., Partridge, H., Levin, E.: Effective potential energies and transport cross sections for interactions of hydrogen and nitrogen. Phys. Rev. AÂ 62, 062709 (2000)
Stallcop, J.R., Partridge, H., Levin, E.: Effective potential energies and transport cross sections for atom-molecule interactions of nitrogen and oxygen. Phys. Rev. AÂ 64, 042722 (2001)
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2012 Springer-Verlag Berlin Heidelberg
About this paper
Cite this paper
Slowicka, A., Walentam, Z.A., Szymanski, Z. (2012). Structure of the Plume Emitted during Laser Ablation of Materials. In: Kontis, K. (eds) 28th International Symposium on Shock Waves. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-25685-1_118
Download citation
DOI: https://doi.org/10.1007/978-3-642-25685-1_118
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-642-25684-4
Online ISBN: 978-3-642-25685-1
eBook Packages: EngineeringEngineering (R0)