Combined dc electric-ultraviolet to near infrared optical breakdown of Ar in a wide range of impact parameters

31st International Conference on Equations of State for Matter

Loktionov, E.Yu.^1 ; Pasechnikov, N.A.^1 ; Telekh, V.D.^1

Bauman Moscow State Technical University, 2nd Baumanskaya Street 5, Moscow

105005, Russia^1

关键词: Breakdown probability;    Breakdown threshold;    Discharge dynamics;    Electric components;    Gas pressures;    Impact-parameter;    Irradiation wavelength;    Optical breakdown;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/774/1/012125/pdf
DOI  :  10.1088/1742-6596/774/1/012125

来源: IOP

【 摘 要 】

A combined dc electric-optical breakdown (λ = 213, 266, 355, 532 and 1064 nm; τFMWH= 68 ps, 18 ns; I0= 109-1013W/cm2; Edc= 0-13.2 kV/cm) and discharge dynamics in argon has been experimentally investigated at pressures (p = 1.0 × 101-5.57 × 105Pa). Breakdown thresholds were evaluated at different gas pressures and irradiation wavelengths for 0.5 breakdown probability in terms of laser and electric components. It has been discovered that such a combined breakdown could take place at laser and electric components values significantly less than those for "pure" optical or electric impact.