Journal article

Publication year: 2019

Journal: Plasma Sources Science and Technology

Volume number: 28

Issue number: 11

ISSN: 0963-0252

eISSN: 1361-6595

Open access status: Green

DOI Link: https://doi.org/10.1088/1361-6595/ab497e

Publisher: IOP Publishing

Abstract: 
A transient optically thick plasma under the influence of a constant external magnetic field was investigated taking self-absorption into account. Self-absorption which defines the excited state-densities is an important mechanism and can be used with other methods to describe the state densities for an optically thick plasma. This method is an established tool to retrieve state-density and plasma parameters. To measure each magnetic sub-level density of argon 1s(4) and 1s(5) (in Paschen?s notation) a tunable diode laser absorption spectroscopy was used. Based on reconstructed excited state densities, the self-absorption coefficient was calculated for individual magnetic sub-levels. A decrease in self-absorption with an external magnetic field was noticed indicating a higher transparency of the plasma. Furthermore a polarization dependent self-absorption was found. The presented results can help to model optical properties and interpret the absorption of a low-pressure optically thick magnetized plasma.

Harvard Citation style: Bergert, R. and Mitic, S. (2019) Optical properties of magnetized transient low-pressure plasma, Plasma Sources Science and Technology, 28(11), Article 115001. https://doi.org/10.1088/1361-6595/ab497e

APA Citation style: Bergert, R., & Mitic, S. (2019). Optical properties of magnetized transient low-pressure plasma. Plasma Sources Science and Technology. 28(11), Article 115001. https://doi.org/10.1088/1361-6595/ab497e