Abstract
The asymmetric pulse-periodic dielectric barrier discharge (DBD) in a mixture of argon with sulfur vapor exhibits the emission spectrum of the discharge with intense bands of S2 molecules (B3Σ − > X3Σ transition) in the visible region. The modeling of the discharge characteristics in Ar–S2 mixture within the 1D fluid model is presented showing that during a voltage pulse (150 ns), an electropositive plasma is formed in the entire discharge gap with the electron number density reaching values above 1.5*1018 m−3 at the maximum under the mean electron energy of about 3 eV. The high electron number density during the current pulse leads to efficient excitation of sulfur dimers, as a result, their radiative efficiency during the voltage pulse reaches approximately 4%. The discharge is considered as promising one for creating radiation source in visible region of spectrum.
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Avtaeva, S. Modeling of the Sulfur Emission in the Asymmetric Pulse Dielectric Barrier Discharge. Plasma Chem Plasma Process 43, 867–877 (2023). https://doi.org/10.1007/s11090-023-10326-x
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DOI: https://doi.org/10.1007/s11090-023-10326-x