Title

Modeling of dynamical processes in laser-induced plasma

Abstract

A plume consisting of vapor and ioinized particles of the workpiece is usually formed in many laser materials processing. The characteristics of this laser-plasma plume depend on a large number of parameters such as the laser power, spot size, scanning speed, material properties and shielding gas. The temperature, degree of ionization, absorption coefficient and pressure of the plume are calculated for different process parameters. The absorption coefficient of the plume given by the Kramers-Unsold relation equation and the ionization fraction given by the Saha-Eggert equation are used to determine the plume pressure. The quality of materials processing can be assessed by the plume properties, and the plume pressure monitoring can be used as a diagnostic tool for process automation and reproducibility of product quality.

Publication Date

1-1-1997

Publication Title

Laser Institute of America, Proceedings

Volume

83

Issue

Pt 1

Document Type

Article; Proceedings Paper

Personal Identifier

scopus

DOI Link

https://doi.org/10.2351/1.5059652

Socpus ID

0031345515 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/0031345515

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