2D numerical modelling of the gas temperature in a high-temperature high-power strontium atom laser excited by nanosecond pulsed longitudinal discharge in a He-SrBr2 mixture

18th International Summer School on Vacuum, Electron and Ion Technologies

Chernogorova, T.P.^1 ; Temelkov, K.A.^2 ; Koleva, N.K.^2 ; Vuchkov, N.K.^2

Faculty of Mathematics and Informatics, St. Kl. Ohridski University of Sofia, 5 James Bourchier Blvd., 1164 Sofia, Bulgaria^1

Metal Vapor Lasers Laboratory, Acad. G. Nadjakov Institute of Solid State Physics, Bulgarian Academy of Sciences, 72 Tsarigradsko Chaussee, 1784 Sofia, Bulgaria^2

关键词: 2d numerical modelling;    Axial symmetry;    Gas temperature;    High temperature;    Large volumes;    Laser parameters;    Power input;    Thermal modes;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/514/1/012060/pdf
DOI  :  10.1088/1742-6596/514/1/012060

来源: IOP

【 摘 要 】

Assuming axial symmetry and a uniform power input, a 2D model (r, z) is developed numerically for determination of the gas temperature in the case of a nanosecond pulsed longitudinal discharge in He-SrBr2formed in a newly-designed large-volume high-temperature discharge tube with additional incompact ZrO2insulation in the discharge-free zone, in order to find the optimal thermal mode for achievement of maximal output laser parameters. The model determines the gas temperature of a nanosecond pulsed longitudinal discharge in helium with small additives of strontium and bromine.