Analysis on the variation of Ar and He plasma refractive index with temperature in CO2 laser beam welding

Jinhe Liu; Fengming Zhang; Decai Yang

doi:10.1117/12.317913

15 August 1998 Analysis on the variation of Ar and He plasma refractive index with temperature in CO₂ laser beam welding

Jinhe Liu, Fengming Zhang, Decai Yang

Author Affiliations +

Proceedings Volume 3550, Laser Processing of Materials and Industrial Applications II; (1998) https://doi.org/10.1117/12.317913
Event: Photonics China '98, 1998, Beijing, China

Abstract

According to the quasi-neutrality equation, the law of partial pressure, pressure equation, Saha equation and the principle of superposition on plasma refractive index, the Ar, He plasma's electron density, atom density, ion density and the variation of refractive index with changing of temperature are calculated when the pressure is 1,3,5,7 atm. respectively. Moreover it is analyzed that Ar, He plasma act on CO₂ laser beam welding from the point of view that plasma and laser affect each other.

Citation Download Citation

Jinhe Liu, Fengming Zhang, and Decai Yang "Analysis on the variation of Ar and He plasma refractive index with temperature in CO₂ laser beam welding", Proc. SPIE 3550, Laser Processing of Materials and Industrial Applications II, (15 August 1998); https://doi.org/10.1117/12.317913

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